Equation Writing and Predicting Products Chemistry I Acc

Size: px
Start display at page:

Download "Equation Writing and Predicting Products Chemistry I Acc"

Transcription

1 Introduction: Equation Writing and Predicting Products Chemistry I Acc If you examine your bicycle after it has been left out in the rain a number of times you will find that it has begun to rust. Rust is a slow chemical reaction of the iron in the bicycle with oxygen. If a piece of sodium is put in water, a much more rapid chemical reaction occurs. Sodium reacts with water to produce sodium hydroxide and hydrogen gas. During this reaction, enough heat is liberated to ignite the hydrogen gas, causing it to explode. Chemists observe what is happening in a chemical reaction and try to describe it in language that is clear and simple. A chemical equation uses formulas and symbols to describe the substances involved in a reaction, the physical state of the substance, the use of a catalyst, and relative proportions. The general form of an equation is: Reactants > Products In this investigation, you will perform a series of reactions and make careful observations of the changes that occur. Using simple tests and your knowledge of chemistry, you will determine the identity of the products. With this information, you will write and balance chemical equations to describe the reactions. Materials goggles lab burner crucible tongs magnesium ribbon watch glass 6 test tubes triangular file glycerin wooden splints copper strip bent glass tube rubber tubing cobalt chloride paper test tube tongs graduated cylinder manganese(iv) oxide (MnO 2 ) potassium iodide (KI) 0.1M lead(ii) nitrate (Pb(NO 3 ) 2 ) 0.1M limewater (Ca(OH) 2 solution) copper(ii) carbonate (CuCO 3 ) one-hole rubber stopper ammonium carbonate ((NH 4 ) 2 CO 3 ) hydrogen peroxide (H 2 O 2 ) 10% solution Safety Warnings Wear your goggles at all times during this investigation. Avoid looking directly at the burning Magnesium. The bright light could seriously damage your eyes. Tie back loose hair. Hydrochloric acid is corrosive. Avoid direct contact with it. If you get some on your skin, immediately wash it off with copious amounts of water. Ammonia is a skin and respiratory irritant so avoid inhaling it deeply. Lead compounds are poisonous so be sure to avoid contact with skin. If contact occurs immediately wash it off with copious amounts of water and inform your teacher. Glass tubing breaks easily. Exercise caution when working with it and use glycerin. Procedure: 1. Put on your goggles and wear them throughout the lab. For each of the reactions, record your observations in the data table. Observations should include any evidence that a chemical reaction has taken place; the results of any test performed on any gases produced; the appearance of the products; and any other relevant data. 2. Obtain a 2 cm long piece of Mg ribbon. This length is approximate. The exact size is not important. Holding the Mg ribbon with the crucible tongs, carefully light the ribbon with the lab burner. Once lit hold the Mg ribbon over a watch glass to collect any ash and debris. When the Mg is done burning turn off the burner. CAUTION: Make sure hair is tied back. The tongs will be hot even after the Mg has finished burning. Do not touch them for at least five minutes. Place them on the watch glass to cool. Do not look directly at the Mg while it burns.

2 3. Read steps 3 and 4 completely before starting step 3. Place a medium test tube in a test-tube rack. Have a second test tube of the same size ready in a pair of test-tube tongs. Add 2 fingers worth of 3.0M hydrochloric acid (HCl) to the first test tube. Drop a 2-cm piece of Mg into the acid. Again, the length is approximate. The exact size is not important. CAUTION: Hydrochloric acid is corrosive. Avoid spills and splashes. If you do spill acid immediately rinse the area with plenty of water and notify your teacher. 4. Invert the second test tube over the mouth of the first test tube. When the reaction appears to have ended, light a wooden splint and quickly test the collected gas for flammability by holding the test tube and inserting the burning splint into the mouth of test tube #2. CAUTION: The gas in the test tube will make a LOUD popping sound, do not be startled. 5. Obtain a copper strip. Scratch it with the triangular file. Light the lab burner. Grasp the piece of copper with the crucible tongs and heat it in the burner until it blackens. Remove from the flame and allow it to cool. Try now to scratch the blackened part with the file. 6. Carefully place about one heaping spatula in of ammonium carbonate ((NH 4 ) 2 CO 3 ) in a medium test tube. CAUTION: The odor produced in this reaction is quite noxious. Make sure to only waft and not inhale directly. The gas coming from the tube is a respiratory and skin irritant, so avoid inhaling it deeply. Hold the test tube with test tube tongs and slowly heat the test tube by placing it in the flame for a few seconds and then removing it for a few seconds. Continue heating in this manner for a total of about 1 minute. As you heat the solid carefully waft the air towards your nose to detect any odor. CAUTION: When heating the test tube, make sure the open end points away from any person. After you have detected the odor continue to heat the test tube in the fume hood. Place a burning wooden splint in the mouth of the test. Finally, as the heating continues, place a piece of Cobalt chloride paper just inside the mouth of the test tube. Put the test tube in the rack to cool. Turn the burner off. 7. Place approximately two fingers of 10% hydrogen peroxide (H 2 O 2 ) into a medium test tube. Add a small amount of (about the tip of a spatula or wooden splint) of Manganese(IV) oxide (MnO 2 ) to the hydrogen peroxide. Then wait ten minutes. Light a wooden split and allow it to burn for a few seconds. Then blow out the flame and quickly place the glowing embers halfway into the test tube to see if they relight. Do not stick the splint in the liquid. 8. Place two drops of potassium iodide solution, KI, into a small test tube. Add two drops of lead nitrate solution, Pb(NO 3 ) 2. CAUTION: Lead compounds are poisonous so be sure to avoid contact with the skin. If contact occurs, immediately wash the area with plenty of water and inform the teacher. Clean up all spills immediately. 9. Assemble the one-hole stopper, with the glass elbow in the stopper and attach the rubber tubing to the glass tube. CAUTION: Glass tubing breaks easily. Exercise caution when working with it. Use glycerin as a lubricant. Place one heaping spatula of copper carbonate CuCO 3 in an extra large test tube. Prepare a second medium sized test tube with three to four fingers of limewater. Light the lab burner. Holding the test tube containing the Copper carbonate with the test tube tongs, heat the copper carbonate. As the copper carbonate is heated place the rubber tubing into the test tube with the limewater. The open end of the rubber tubing must be submerged in the limewater so the gas produced by heating the copper carbonate can bubble through the limewater. Record any change you observe with the copper carbonate or the limewater. 10. Clean up your work area and wash your hands before leaving the laboratory.

3 Chemistry I Acc Pre-Lab Name Equation Writing and Predicting Products Read the entire laboratory assignment and the relevant pages in your textbook. Answer all pre-lab question before beginning the lab. 1. What constitutes a positive test for each of the following gases? a. oxygen b. hydrogen c. carbon dioxide d. water vapor e. ammonia 2. What is the proper way to small a substance in the lab? Why should care be taken when smelling a gas such as ammonia? 3. What is the role of a catalyst in a reaction? How can you tell when a substance serves as a catalyst? 4. One way to identify limestone (Calcium carbonate - CaCO 3 ) is to drop a small amount of hydrochloric acid on it. A positive test results in a fizz of carbon dioxide being produced. Predict the other two products and balance the equation. Data and Observations Data Table 1 Reaction Write observations of reaction here burning of Mg Mg and HCl

4 Reaction Write observations of reaction here Burning Cu Heating Ammonium Carbonate Hydrogen peroxide plus the catalyst manganese dioxide KI and Pb(NO 3 ) 2 Heating Copper Carbonate Analysis and Synthesis 1. Write a balanced equation for each reaction performed. Include the physical state of each substance. a. b. c. d. e. f. g.

5 2. Classify each of the reactions as direct combination, decomposition, single replacement or double replacement. a. b. c. d. e. f. g. 3. Limewater is an aqueous solution of Ca(OH) 2. What is the cloudy white precipitate that forms with carbon dioxide gas. Write a balanced chemical equation for this reaction. 4. A positive test for hydrogen was the pop test. What category of chemical reaction was occurring? Write a balanced chemical equation to represent this reaction. 5. For each of the following situations, determine the identity of the gas produced from the information given and write a balanced chemical equation that represents the reaction. a. When potassium bromate (KBrO 3 ) is heated it decomposes into potassium bromide and a gas that reignites a glowing splint. b. Sodium metal reacts violently with water to produce sodium hydroxide and a gas that pops in the presence of a burning splint.

6 c. The recipe for the volcanic eruption used in many science projects is the reaction of baking soda (NaHCO 3 ) and vinegar (CH 3 COOH). When these compounds are mixed together, the salt sodium acetate (NaCH 3 COO) is formed as well as a gas that extinguishes a burning flame and also a liquid substance that turns cobalt chloride paper from blue to pink. 6. Cobalt chloride paper is a hydrated salt used for making humidity gauges. The formula of the hydrated form is CoCl 2 2H 2 O. What color is associated with the hydrated form of cobalt chloride? How might is be to predict weather changes? 7. Manganese dioxide is considered to be a catalyst in the decomposition of hydrogen peroxide. Design an experiment in general terms to show that manganese dioxide is a catalyst.

Oxygen Formula: O 2 Bonding: covalent Appearance: colourless gas. Oxygen is one of the two main gases in our atmosphere, the other being nitrogen.

Oxygen Formula: O 2 Bonding: covalent Appearance: colourless gas. Oxygen is one of the two main gases in our atmosphere, the other being nitrogen. Composition of the air Air is a mixture of gases. The approximate amount if each gas in dry air is shown in the pie chart (right), but you should be aware that air also contains a variable amount of water

More information

Composition of Air. Air is a mixture of different gases. Gas % Nitrogen 78% Oxygen 21% Argon 1% Carbon Dioxide 0.04%

Composition of Air. Air is a mixture of different gases. Gas % Nitrogen 78% Oxygen 21% Argon 1% Carbon Dioxide 0.04% The Atmosphere Composition of Air Air is a mixture of different gases Gas % Nitrogen 78% Oxygen 21% Argon 1% Carbon Dioxide 0.04% Water Vapour Varies day to day Experiment to show 1/5 of air is oxygen

More information

Thermal decomposition. Metal carbonates

Thermal decomposition. Metal carbonates Decomposition reactions Copy correctly Up to 3% of a workbook Copying or scanning from ESA workbooks is subject to the New Zealand Copyright Act which limits copying to 3% of this workbook. Many compounds

More information

Oxidation and Reduction

Oxidation and Reduction Oxidation and Reduction An oxidation reaction is one in which oxygen is added to a substance. Example: Methane is oxidised when it burns in air. Oxygen is added to the carbon in methane, forming carbon

More information

OC22 Show that approximately one fifth of the air is oxygen; show that there is CO 2 and water vapour in air

OC22 Show that approximately one fifth of the air is oxygen; show that there is CO 2 and water vapour in air Chemistry: 10. Air and Oxygen Please remember to photocopy 4 pages onto one sheet by going A3 A4 and using back to back on the photocopier Syllabus OC21 Understand that air is a mixture of gases, and state

More information

TYPES OF CHEMICAL REACTIONS PART I INTRODUCTION

TYPES OF CHEMICAL REACTIONS PART I INTRODUCTION EXPERIMENT 10 (2 Weeks) Chemistry 100 Laboratory TYPES OF CHEMICAL REACTIONS PART I INTRODUCTION It is useful to classify reactions into different types, because products of reactions can be predicted.

More information

Duncan. UNIT 8 - Chemical Equations BALANCING EQUATIONS PRACTICE WORKSHEET 14.) C2H6 + O2 CO2 + H2O. 2.) Na + I2 NaI 3.) N2 + O2 N2O 4.

Duncan. UNIT 8 - Chemical Equations BALANCING EQUATIONS PRACTICE WORKSHEET 14.) C2H6 + O2 CO2 + H2O. 2.) Na + I2 NaI 3.) N2 + O2 N2O 4. BALANCING EQUATIONS PRACTICE WORKSHEET 1.) CH4 + O2 CO2 + H2O 2.) Na + I2 NaI 3.) N2 + O2 N2O 4.) N2 + H2 NH3 5.) KI + Cl2 KCl + I2 6.) HCl + Ca(OH)2 CaCl2 + H2O 7.) KClO3 KCl + O2 8.) K3PO4 + HCl KCl

More information

CONSERVATION OF MATTER AND CHEMICAL PROPERTIES

CONSERVATION OF MATTER AND CHEMICAL PROPERTIES 1 CONSERVATION OF MATTER AND CHEMICAL PROPERTIES I. OBJECTIVES AND BACKGROUND The object of this experiment is to demonstrate the conservation of matter- or more particularly, the conservation of "atoms"

More information

Copper Odyssey. Chemical Reactions of Copper

Copper Odyssey. Chemical Reactions of Copper Name Lab Partner(s) Copper Odyssey Chemical Reactions of Copper Date Period Elemental copper metal will be converted into copper (II) ion and then brought through a series of compound conversions until

More information

Iron filings (Fe) 56g IRON + SULPHUR IRON SULPHIDE

Iron filings (Fe) 56g IRON + SULPHUR IRON SULPHIDE W.S.51. Chemical reactions. All of the different materials around us have been formed by chemical reactions from about one hundred simple elements. The diagram below shows a chemical reaction between the

More information

EXPERIMENT 5. Physical and Chemical Changes Part 1 INTRODUCTION

EXPERIMENT 5. Physical and Chemical Changes Part 1 INTRODUCTION EXPERIMENT 5 Physical and Chemical Changes Part 1 INTRODUCTION Matter undergoes many changes. In some cases only the form of the substance (such as physical state, size of particle, or temperature) is

More information

Zinc 17. Part 2 Practical work

Zinc 17. Part 2 Practical work Zinc 17 Part 2 Practical work 18 Zinc and Zirconia (per group) Teacher s notes Using carbon to extract copper from copper oxide could be used as an introduction to extracting less-reactive metals by displacement.

More information

PREPARATION & ANALYSIS OF AN IRON COORDINATION COMPOUND PART A: PREPARATION OF AN IRON COORDINATION COMPOUND

PREPARATION & ANALYSIS OF AN IRON COORDINATION COMPOUND PART A: PREPARATION OF AN IRON COORDINATION COMPOUND Chemistry 112 PREPARATION & ANALYSIS OF AN IRON COORDINATION COMPOUND PART A: PREPARATION OF AN IRON COORDINATION COMPOUND A. INTRODUCTION In this experiment you will synthesize the iron coordination compound,

More information

PHYSICAL CHANGE OR CHEMICAL CHANGE?

PHYSICAL CHANGE OR CHEMICAL CHANGE? PHYSICAL CHANGE OR CHEMICAL CHANGE? STUDENT BOOK Chapter 2, page 58 LAB 24 OBSERVATION TOOLBOX Pages 18 19, 32, 39 40 Goal Distinguish between a physical change and a chemical change. Observation criteria

More information

*20GSD5201* Double Award Science: Chemistry. Unit C2 Higher Tier WEDNESDAY 15 JUNE 2016, AFTERNOON [GSD52] *GSD52* *G5802* TIME 1 hour 15 minutes.

*20GSD5201* Double Award Science: Chemistry. Unit C2 Higher Tier WEDNESDAY 15 JUNE 2016, AFTERNOON [GSD52] *GSD52* *G5802* TIME 1 hour 15 minutes. Centre Number Candidate Number General Certificate of Secondary Education 2016 Double Award Science: Chemistry Unit C2 Higher Tier [GSD52] *GSD52* *G5802* *GSD52* WEDNESDAY 15 JUNE 2016, AFTERNOON TIME

More information

Year 9 Science. 9C5: Energy Changes in Reactions and the Reactions of Metals. Home-Learning Challenge

Year 9 Science. 9C5: Energy Changes in Reactions and the Reactions of Metals. Home-Learning Challenge Year 9 Science 9C5: Energy Changes in Reactions and the Reactions of Metals Home-Learning Challenge Name: Form: 9C5 Module Overview and Home-Learning Subject: Science - Chemistry Year: 9 Half-Term: 1,

More information

Topic: Gases in the Atmosphere

Topic: Gases in the Atmosphere Topic: Gases in the Atmosphere Composition of the atmosphere The two main gases making up 99% of dry air are nitrogen and oxygen. Our air also contains varying amounts of water vapour, which we refer to

More information

INDIAN SCHOOL MUSCAT

INDIAN SCHOOL MUSCAT INDIAN SCHOOL MUSCAT DEPARTMENT OF CHEMISTRY QUESTION BANK CLASS X CHEMICAL REACTIONS AND EQUATIONS One mark questions 1. What change in color is observed when white silver chloride is left exposed to

More information

Types of Chemical Reactions Lab Date(s)

Types of Chemical Reactions Lab Date(s) Types of Chemical Reactions Lab Date(s) (don t forget to put the title/page # in the Table of Contents) Lab Partner: Purpose : (Read through the info for each station, then write 2-complete sentences stating

More information

Determination of the Empirical Formula of Magnesium Oxide

Determination of the Empirical Formula of Magnesium Oxide Determination of the Empirical Formula of Magnesium Oxide The quantitative stoichiometric relationships governing mass and amount will be studied using the combustion reaction of magnesium metal. Magnesium

More information

DETERMINATION of the EMPIRICAL FORMULA

DETERMINATION of the EMPIRICAL FORMULA DETERMINATION of the EMPIRICAL FORMULA One of the fundamental statements of the atomic theory is that elements combine in simple whole number ratios. This observation gives support to the theory of atoms,

More information

EXPERIMENT. The Reaction of Magnesium with Hydrochloric Acid; The Molar Volume of Hydrogen

EXPERIMENT. The Reaction of Magnesium with Hydrochloric Acid; The Molar Volume of Hydrogen EXPERIMENT The Reaction of Magnesium with Hydrochloric Acid; The Molar Volume of Hydrogen PURPOSE In this experiment you will determine the volume of the hydrogen gas which is produced when a sample of

More information

EMPIRICAL FORMULA DETERMINATION

EMPIRICAL FORMULA DETERMINATION Name Date Class Chapter 10 Chemical Quantities EXPERIMENT EMPIRICAL FORMULA DETERMINATION Text Reference Section 10.3 PURPOSE To determine the empirical formula of magnesium oxide. BACKGROUND Carbon dioxide

More information

EMPIRICAL FORMULA OF MAGNESIUM OXIDE

EMPIRICAL FORMULA OF MAGNESIUM OXIDE EXPERIMENT 7 Chemistry 110 EMPIRICAL FORMULA OF MAGNESIUM OXIDE PURPOSE: The purpose of this experiment is to determine the empirical formula of a compound. I. INTRODUCTION The object of this experiment

More information

A Cycle of Copper Reactions

A Cycle of Copper Reactions EXPERIMENT A Cycle of Copper Reactions PURPOSE To demonstrate a series of copper reactions: starting with copper metal, oxidizing the metal to put it into solution and then, form a copper hydroxide, an

More information

EMPIRICAL FORMULA OF MAGNESIUM OXIDE

EMPIRICAL FORMULA OF MAGNESIUM OXIDE EXPERIMENT 7 Chemistry 110 EMPIRICAL FORMULA OF MAGNESIUM OXIDE PURPOSE: The purpose of this experiment is to determine the empirical formula of a compound. I. INTRODUCTION The object of this experiment

More information

PRECAUTIONS WHILE PERFORMING CHEMISTRY ACTIVITIES. Do not touch anything without the permission of the teacherin the lab.

PRECAUTIONS WHILE PERFORMING CHEMISTRY ACTIVITIES. Do not touch anything without the permission of the teacherin the lab. PRECAUTIONS WHILE PERFORMING CHEMISTRY ACTIVITIES Do not touch anything without the permission of the teacherin the lab. 1. Do not use conc. Acids as they are harmful. 2. Handle glass material with care.

More information

A Hydrogen Powered Bottle Rocket

A Hydrogen Powered Bottle Rocket A Hydrogen Powered Bottle Rocket Rockets are made by filling plastic water bottles with a mixture of hydrogen gas and oxygen gas. The rocket is launched by igniting the mixture with a flame. The bottle

More information

Reactivity Series. Question Paper. Save My Exams! The Home of Revision. Module Double Award (Paper 1C) Chemistry of the Elements.

Reactivity Series. Question Paper. Save My Exams! The Home of Revision. Module Double Award (Paper 1C) Chemistry of the Elements. Save My Exams! The Home of Revision For more awesome GCSE and A level resources, visit us at www.savemyexams.co.uk Reactivity Series Question Paper Level GCSE Subject Chemistry Exam Board Edexcel IGCSE

More information

M1.(a) time from when the heating is started until 1. the limewater turns cloudy / milky 1

M1.(a) time from when the heating is started until 1. the limewater turns cloudy / milky 1 M.(a) time from when the heating is started until the limewater turns cloudy / milky (i) the temperature was not high enough accept the copper carbonate had not started to decompose / react accept it takes

More information

Angel International School - Manipay 1 st Term Examination November, 2017

Angel International School - Manipay 1 st Term Examination November, 2017 Grade 10 Angel International School - Manipay 1 st Term Examination November, 2017 CHEMISTRY Duration: 2.30 Hours Index No:- Part 1 Choose the correct answer and circle the number neatly 1) As we move

More information

SIMPLE CHEMICAL REACTIONS

SIMPLE CHEMICAL REACTIONS SIMPLE CHEMICAL REACTIONS 1. Magnesium burns in air giving a very bright light. (a) Complete the word equation below to show this reaction. magnesium +...... The diagram shows four gas-jars. Each contains

More information

ADVANCED AP PLACEMENT CHEMISTRY. Activity Series. Introduction. Objective. Chemicals and Equipment

ADVANCED AP PLACEMENT CHEMISTRY. Activity Series. Introduction. Objective. Chemicals and Equipment ADVANCED AP PLACEMENT CHEMISTRY Introduction Activity Series An activity series of metals is a table of metals arranged in the order of their decreasing chemical activity or the ease at which the metal

More information

5.4 Burnt lime serving as a fertilizer. Task. What are fertilizers produced from? (2)

5.4 Burnt lime serving as a fertilizer. Task. What are fertilizers produced from? (2) Science - Chemistry - Inorganic Chemistry - 5 Fertilizers (P756300) 5.4 Burnt lime serving as a fertilizer Experiment by: Seb Printed: Mar 24, 204 :58:06 AM intertess (Version 3.2 B24, Export 2000) Task

More information

Downloaded from

Downloaded from Chemical Reactions and Equations 1. Identify the component oxidised in the follwing reaction : H 2 S + Cl 2 S + 2HCl 2. A chemical reaction is said to be exothermic if it. Absorbs energy Releases energy

More information

A Hydrogen Powered Bottle Rocket

A Hydrogen Powered Bottle Rocket A Hydrogen Powered Bottle Rocket Rockets are made by filling plastic water bottles with a mixture of hydrogen gas and oxygen gas. The rocket is launched by igniting the mixture with a flame. The bottle

More information

UW Department of Chemistry Lab Lectures Online

UW Department of Chemistry Lab Lectures Online Lab 2: Chemical Composition of Compounds Part I. Identification Based on Percent Metal Compositions Part II. Determination of Percent KClO 3 in a KCl/KClO 3 Mixture Procedure Overview Inspect and clean

More information

Copper Smelting by an Ancient Method

Copper Smelting by an Ancient Method Copper Smelting by an Ancient Method EXPERIMENT ## Prepared by Paul C. Smithson, Berea College, based on Yee et al., 004 Using beads of a copper-containing mineral, students will produce beads of nearly

More information

Partner: Cathy 22 March Separation and Qualitative Determination of Cations and Anions

Partner: Cathy 22 March Separation and Qualitative Determination of Cations and Anions Partner: Cathy 22 March 2012 Separation and Qualitative Determination of Cations and Anions Purpose: The purpose of this lab is to identify the cations and anions components in the unknown solution. This

More information

The following are the completed but unbalanced equations. Each equation is numbered to match each step of the cycle:

The following are the completed but unbalanced equations. Each equation is numbered to match each step of the cycle: REACTIONS OF COPPER Copper will undergo many types of reactions. In this experiment you will observe a sequence of copper reactions. The sequence begins with copper metal and ends with copper metal, so

More information

*20GSD5201* Double Award Science: Chemistry. Unit C2 Higher Tier TUESDAY 9 JUNE 2015, AFTERNOON [GSD52] *GSD52* *G5802* TIME 1 hour 15 minutes.

*20GSD5201* Double Award Science: Chemistry. Unit C2 Higher Tier TUESDAY 9 JUNE 2015, AFTERNOON [GSD52] *GSD52* *G5802* TIME 1 hour 15 minutes. Centre Number Candidate Number General Certificate of Secondary Education 2015 Double Award Science: Chemistry Unit C2 Higher Tier [GSD52] *GSD52* *G5802* *GSD52* TUESDAY 9 JUNE 2015, AFTERNOON TIME 1

More information

OXIDATION-REDUCTION EXPERIMENT

OXIDATION-REDUCTION EXPERIMENT Chem 112 OXIDATION-REDUCTION EXPERIMENT INTRODUCTION An oxidation-reduction (redox) reaction involves the movement of electrons from one reactant to another. Many reactions that you have already studied

More information

Chemistry 8402/2 8402/2. (Jun ) AQA Level 1/2 Certificate June Paper 2 TOTAL. Time allowed 1 hour 30 minutes

Chemistry 8402/2 8402/2. (Jun ) AQA Level 1/2 Certificate June Paper 2 TOTAL. Time allowed 1 hour 30 minutes Centre Number Surname Candidate Number For Examiner s Use Other Names Candidate Signature Examiner s Initials Question Mark AQA Level 1/2 Certificate June 2014 Chemistry 8402/2 Paper 2 Tuesday 10 June

More information

Warning. Chlorine Gas (Cl 2 ) Chlorine gas production

Warning. Chlorine Gas (Cl 2 ) Chlorine gas production Chlorine Gas (Cl 2 ) Chlorine gas is a dense, pale yellowish-green, poisonous, gas which can act as a strong oxidizing agent and commonly finds use in disinfecting water and in the production of bleach

More information

Chemistry 143 Empirical Formulas Dr. Caddell. Synthesis of Zinc Iodide and Magnesium Oxide

Chemistry 143 Empirical Formulas Dr. Caddell. Synthesis of Zinc Iodide and Magnesium Oxide Synthesis of Zinc Iodide and Magnesium Oxide In this lab you will synthesize zinc iodide from zinc metal and solid iodine. You will also synthesize magnesium oxide from magnesium metal and oxygen. Equipment

More information

CHM Gravimetric Chloride Experiment (r7) 1/5

CHM Gravimetric Chloride Experiment (r7) 1/5 CHM 111 - Gravimetric Chloride Experiment (r7) 1/5 Purpose You will perform one of the basic types of quantitative analysis - the gravimetric analysis. You will be asked to determine the percentage of

More information

JSUNIL TUTORIAL, SAMASTIPUR

JSUNIL TUTORIAL, SAMASTIPUR Chapter 1 Chemical Reactions and Equations Q 1. Why should a magnesium ribbon be cleaned before burning in air? Ans. Before burning in air, the magnesium ribbon is cleaned by rubbing with a sandpaper.

More information

ICSE-Science 2 (Chemistry) 1996

ICSE-Science 2 (Chemistry) 1996 ICSE-Science 2 (Chemistry) 1996 Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading

More information

What is: (a) aqua fortis, (b) aqua regia (c) Fixation of Nitrogen?

What is: (a) aqua fortis, (b) aqua regia (c) Fixation of Nitrogen? EXERCISE.1 Question 1: What is: (a) aqua fortis, (b) aqua regia (c) Fixation of Nitrogen? Solution 1: Book Name: Selina concise (a) Aqua fortis: Nitric acid is called aqua fortis. Aqua fortis means strong

More information

SNC 2D0-01 Chemistry Review Chapters 5 and 6

SNC 2D0-01 Chemistry Review Chapters 5 and 6 SNC 2D0-01 Chemistry Review Chapters 5 and 6 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. A chemical change is distinguished from a physical

More information

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level *3629447977* CHEMISTRY 5070/04 Paper 4 Alternative to Practical May/June 2009 1 hour Candidates answer

More information

Q1. From the following list of substances, choose the substances which meet the description given in parts (i) to (v) below :

Q1. From the following list of substances, choose the substances which meet the description given in parts (i) to (v) below : Questions:- Q1. From the following list of substances, choose the substances which meet the description given in parts (i) to (v) below : Ammonium chloride, ammonium nitrate, chlorine, dilute hydrochloric

More information

Experiment 3: Determination of an Empirical Formula

Experiment 3: Determination of an Empirical Formula Background Information The composition of a compound is defined by its chemical formula, which gives the number ratio of the different elements in the compound. For example, water has a fixed composition

More information

, to form the products magnesium oxide, MgO(s), and magnesium nitride, Mg 3

, to form the products magnesium oxide, MgO(s), and magnesium nitride, Mg 3 Active Metals in the Periodic Table Periodic Trends and the Properties of the Elements SCIENTIFIC Introduction Like good experiments, good demonstrations often lead to other demonstrations. What follows

More information

Compiled by Rahul Arora What do you mean by corrosion? How can you prevent it?

Compiled by Rahul Arora What do you mean by corrosion? How can you prevent it? Rahul Arora 12. What do you mean by corrosion? How can you prevent it? 13. MnO2 + 4HCl MnCl2 + 2H2O + Cl2 In the above equation, name the compound which is oxidized and which is reduced? 14. Match the

More information

Lab #3: Law of Definite Proportions

Lab #3: Law of Definite Proportions Name Lab #3: Law of Definite Proportions Sept. 21, 2016 Purpose To find the percent composition and therefore definite ratio of the elements in magnesium oxide. Background When magnesium and oxygen are

More information

Will a displacement reaction occur?

Will a displacement reaction occur? Will a displacement reaction occur? Setting the scene The reactivity series lists metals in order of how reactive they are. More reactive metals are able to displace less reactive metals from their compounds.

More information

Laboratory Exercise: Illustration of the Law of Multiple Proportions

Laboratory Exercise: Illustration of the Law of Multiple Proportions CHEM 109 Introduction to Chemistry Revision 1.0 Laboratory Exercise: Illustration of the Law of Multiple Proportions In this exercise we will illustrate the Law of Multiple Proportions by examining the

More information

1. Which of the given statements about the reaction below are incorrect?

1. Which of the given statements about the reaction below are incorrect? 1. Which of the given statements about the reaction below are incorrect? 2PbO(s) + C(s) 2Pb(s) + CO 2 (g) a. Lead is getting reduced b. Carbon dioxide is getting oxidised c. Carbon is getting oxidised

More information

COMBUSTION. A combustion reaction is the reaction of a substance with oxygen, usually with the rapid release of heat to produce a flame.

COMBUSTION. A combustion reaction is the reaction of a substance with oxygen, usually with the rapid release of heat to produce a flame. 1 COMBUSTION Copyright: Department of Chemistry, University of Idaho, Moscow, ID 2010. A combustion reaction is the reaction of a substance with oxygen, usually with the rapid release of heat to produce

More information

Our country, our future S2 CHEMISTRY DURATION: 2 HOUR

Our country, our future S2 CHEMISTRY DURATION: 2 HOUR Our country, our future S2 CHEMISTRY Exam 1 DURATION: 2 HOUR INSTRUCTIONS: This paper consists of two sections A and B, Attempt all questions in section A and B For section A, circle the most correct alternative

More information

EXPERIMENT 3 THE SYNTHESIS OF COPPER SULFIDE

EXPERIMENT 3 THE SYNTHESIS OF COPPER SULFIDE EXPERIMENT 3 THE SYNTHESIS OF COPPER SULFIDE When heated together, copper and sulfur combine to form a sulfide of copper. In this assignment, you will heat a known mass of copper with excess sulfur in

More information

Periodic Trends and the Properties of Elements The Alkaline Earth Metals

Periodic Trends and the Properties of Elements The Alkaline Earth Metals Introduction Periodic Trends and the Properties of Elements The Alkaline Earth Metals The periodic table is the most recognized symbol of chemistry across the world. It is a valuable tool that allows scientists

More information

*20GSD2101* Double Award Science: Chemistry. Unit C1 Foundation Tier THURSDAY 14 MAY 2015, MORNING [GSD21] *GSD21* TIME 1 hour.

*20GSD2101* Double Award Science: Chemistry. Unit C1 Foundation Tier THURSDAY 14 MAY 2015, MORNING [GSD21] *GSD21* TIME 1 hour. Centre Number Candidate Number General Certificate of Secondary Education 2014 2015 Double Award Science: Chemistry Unit C1 Foundation Tier [GSD21] *GSD21* *G5802* *GSD21* THURSDAY 14 MAY 2015, MORNING

More information

Name Honors Chemistry / /

Name Honors Chemistry / / Name Honors Chemistry / / SOL Questions Chapter 1 Each of the following questions below appeared on an SOL Chemistry Exam. For each of the following bubble in the correct answer on your scantron. 1. The

More information

The Reactivity Series

The Reactivity Series The Reactivity Series 1 of 33 Boardworks Ltd 2016 The Reactivity Series 2 of 33 Boardworks Ltd 2016 What is the reactivity series 3 of 33 Boardworks Ltd 2016 It is possible to arrange a group of elements

More information

Periodic Trends and the Properties of Elements

Periodic Trends and the Properties of Elements Page 1 - The Alkaline Earth Metals Introduction The periodic table is the most recognized symbol of chemistry across the world. It is a valuable tool that allows scientists not only to classify the elements

More information

Metals. N4 & N5 Homework Questions

Metals. N4 & N5 Homework Questions St Peter the Apostle High School Chemistry Department Metals N4 & N5 Homework Questions Answer questions as directed by your teacher. National 4 level questions are first followed by National 5 level questions.

More information

21. sodium nitrite 31. potassium carbonate. 23. aluminum hydroxide 33. nickel (II) carbonate. 24. ammonium hydroxide 34.

21. sodium nitrite 31. potassium carbonate. 23. aluminum hydroxide 33. nickel (II) carbonate. 24. ammonium hydroxide 34. N.E. Packet 1 Nomenclature WS 1 (Ionic Compounds) Name: Date: Per: Write the name for each of the following compounds. 1. CaCO 3 11. BaSO 4 2. FeO 12. Zn(NO 3 ) 2 3. K 2 SO 3 13. CuSO 4 4. AgCl 14. AlCl

More information

GraspIT AQA GCSE Chemical changes

GraspIT AQA GCSE Chemical changes A. Reactivity of metals The reactivity series, metal oxides and extractions 1. Three metals, X, Y and Z were put into water. The reactions are shown below: a) Use the diagrams to put metals X, Y and Z

More information

SECTION I (40 Marks) Attempt all questions from this Section

SECTION I (40 Marks) Attempt all questions from this Section General Instructions 1. SECTION I (40 Marks) Attempt all questions from this Section Question 1 (a) Chlorine is subject of the following questions: [5] i. What is the atomicity of chlorine? ii. Name the

More information

To study the chemical reaction of an iron nail with aqueous copper sulphate solution; and to study the burning of magnesium ribbon in air.

To study the chemical reaction of an iron nail with aqueous copper sulphate solution; and to study the burning of magnesium ribbon in air. Materials 1 AIM To study the chemical reaction of an iron nail with aqueous copper sulphate solution; and to study the burning of magnesium ribbon in air. (a) Chemical reaction of iron nail with copper

More information

Double Award Science: Chemistry Unit C2 Higher Tier

Double Award Science: Chemistry Unit C2 Higher Tier Centre Number 71 Candidate Number General Certificate of Secondary Education 2014 Double Award Science: Chemistry Unit C2 Higher Tier GSD52 [GSD52] TUESDAY 10 JUNE 2014, AFTERNOON TIME 1 hour 15 minutes.

More information

1. Which of the following elements has the highest percentage by mass in nature? A. Oxygen B. Aluminium C. Nitrogen D. Silicon

1. Which of the following elements has the highest percentage by mass in nature? A. Oxygen B. Aluminium C. Nitrogen D. Silicon Class: F.3 ( ) Baptist Lui Ming Choi Secondary School First Term Examination (2013-2014) Date: 6 / 12 / 2013 Name: Form 3 Chemistry Time: 10:20-11:05 a.m. Answer ALL the questions. For Section A, choose

More information

Total Grade /150 Checked by

Total Grade /150 Checked by FIRST LETTER OF YOUR LAST NAME CHEMISTRY 1127 EXAM I NAME (PRINT) SECTION SIGNATURE TA PLEASE READ THE FOLLOWING INSTRUCTIONS Do NOT begin the exam until asked to do so. There are 8 numbered pages, a useful

More information

Quantitive Chemistry Question paper

Quantitive Chemistry Question paper Quantitive Chemistry Question paper Level Subject Exam Board Topic Sub-Topic Booklet GCSE Chemistry CCEA Quantitative Chemistry Quantitive Chemistry Question paper Time Allowed: 93 minutes Score: /77 Percentage:

More information

Periodic Activity of Metals Periodic Trends and the Properties of the Elements

Periodic Activity of Metals Periodic Trends and the Properties of the Elements elearning 2009 Introduction Periodic Activity of Metals Periodic Trends and the Properties of the Elements Publication No. 95022 Elements are classified based on similarities, differences, and trends in

More information

PHYSICAL AND CHEMICAL CHANGES CLASS 7. Types of changes: The changes are of two kinds, physical and chemical..

PHYSICAL AND CHEMICAL CHANGES CLASS 7. Types of changes: The changes are of two kinds, physical and chemical.. PHYSICAL AND CHEMICAL CHANGES CLASS 7 Types of changes: The changes are of two kinds, physical and chemical.. Physical Properties of Substances Properties such as shape, size, colour and state of a substance

More information

Topic Reacting masses Level GCSE Outcomes 1. To calculate reacting masses 2. To set out mole calculations in a grid format

Topic Reacting masses Level GCSE Outcomes 1. To calculate reacting masses 2. To set out mole calculations in a grid format Topic Reacting masses Level GCSE Outcomes 1. To calculate reacting masses 2. To set out mole calculations in a grid format Problems on Reacting Masses of Solids Section 1 1. What is the mass of magnesium

More information

SCIENCE SPM MODULE 4

SCIENCE SPM MODULE 4 SCIENCE SPM MODULE 4 PAPER 1 1 Which statement correctly states the difference between chemical and physical changes? Chemical change Physical change A Little energy is needed A lot of energy is needed

More information

Properties of Elements

Properties of Elements Pre-Lab: (Answer questions on your data sheet.) Properties of Elements 1. Using a periodic table, determine and write the chemical symbol for each of the eight elements listed on your data sheet. 2. Predict

More information

to the presentation Teaching Thermodynamics: Chemical Potential from the Beginning Regina Rüffler, Georg Job

to the presentation Teaching Thermodynamics: Chemical Potential from the Beginning  Regina Rüffler, Georg Job to the presentation Teaching Thermodynamics: Chemical Potential from the Beginning Regina Rüffler, Georg Job Thermo International 2006 Boulder, August 3, 2006 FOUNDATION Further informations on the homepage:

More information

AP* CHEMISTRY EQUATIONS BY TYPE

AP* CHEMISTRY EQUATIONS BY TYPE AP* CHEMISTRY EQUATIONS BY TYPE Double Replacement 1. Hydrogen sulfide is bubbled through a solution of silver nitrate. 2. An excess of sodium hydroxide solution is added to a solution of magnesium nitrate.

More information

IDENTIFYING UNKNOWN SUBSTANCES

IDENTIFYING UNKNOWN SUBSTANCES IDENTIFYING UNKNOWN SUBSTANCES LAB 15 EXPERIMENT STUDENT BOOK Chapter 1, page 25 TOOLBOX Page 4 and 36 Goal Identify unknown substances with the help of different tests. 1. What is the independent variable

More information

ICSE-Science 2 (Chemistry) 2004

ICSE-Science 2 (Chemistry) 2004 ICSE-Science 2 (Chemistry) 2004 Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading

More information

The empirical formula of a compound

The empirical formula of a compound The empirical formula of a compound Reference: Chapter 1, Section 1.2, pages 21 24 Please note Aim A full risk assessment should be carried out prior to commencing this experiment. Personal safety equipment

More information

ICSE-Science 2 (Chemistry) 2000

ICSE-Science 2 (Chemistry) 2000 ICSE-Science 2 (Chemistry) 2000 Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading

More information

Activity of metals SCIENTIFIC. Demonstration and Inquiry. Introduction. Concepts. Background. Inquiry Approach. Demonstration Questions

Activity of metals SCIENTIFIC. Demonstration and Inquiry. Introduction. Concepts. Background. Inquiry Approach. Demonstration Questions Activity of Metals Demonstration and Inquiry SCIENTIFIC Introduction Chemical reactions are not formulas on a piece of paper they are dynamic and exciting events! The demonstration of aluminum with copper(ii)

More information

General Certificate of Secondary Education Double Award Science: Chemistry Unit C2 Higher Tier [GSD52] TUESDAY 10 JUNE 2014, AFTERNOON

General Certificate of Secondary Education Double Award Science: Chemistry Unit C2 Higher Tier [GSD52] TUESDAY 10 JUNE 2014, AFTERNOON Centre Number 71 Candidate Number General Certificate of Secondary Education 2014 Double Award Science: Chemistry Unit C2 Higher Tier [GSD52] MV18 TUESDAY 10 JUNE 2014, AFTERNOON TIME 1 hour 15 minutes,

More information

Experiment Twelve Empirical Formula of Magnesium Oxide

Experiment Twelve Empirical Formula of Magnesium Oxide Experiment Twelve Empirical Formula of Magnesium Oxide Objective The purpose of this experiment is to determine the stoichiometric ratio of magnesium and oxygen following the combustion of magnesium metal.

More information

GRADE: 10 CHEMISTRY MCQ (TERM-1)

GRADE: 10 CHEMISTRY MCQ (TERM-1) GRADE: 10 CHEMISTRY MCQ (TERM-1) 1 When ferrous sulphate crystals are heated, the colour of the residue formed is : (a) red (b) brown (c) orange (d) green. 2 A small amount of quick lime is taken in a

More information

Properties of Elements

Properties of Elements Properties of Elements Pre-Lab: (Answer questions on your data sheet.) 1. Using a periodic table, determine and write the chemical symbol for each of the eight elements listed on your data sheet. 2. Predict

More information

Teacher Demo: Photosynthesis and Respiration: Complementary Processes

Teacher Demo: Photosynthesis and Respiration: Complementary Processes SNC1D/1P Sustainable Ecosystems/ Sustainable Ecosystems and Human Activity Teacher Demo: Photosynthesis and Respiration: Complementary Processes Topics photosynthesis and respiration gas tests for oxygen

More information

INDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF CHEMISTRY CLASS X- PRACTICAL WORKSHEET

INDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF CHEMISTRY CLASS X- PRACTICAL WORKSHEET INDIAN SCHOOL MUSCAT SENIOR SECTION DEPARTMENT OF CHEMISTRY CLASS X- PRACTICAL WORKSHEET Different types of chemical reactions Experiment No: 1(a) Combination reaction Objectives: To study the Combination

More information

AP Chemistry Reaction Set

AP Chemistry Reaction Set Class: Date: AP Chemistry Reaction Set 2009-2010 Other 1. Pure solid phosphorus (white form) is burned in air. (2002) 2. Sulfur dioxide gas is bubbled into distilled water. (2001) 3. A drop of potassium

More information

GRAVIMETRIC DETERMINATION OF SULFATE IN AN UNKNOWN SOLUTION

GRAVIMETRIC DETERMINATION OF SULFATE IN AN UNKNOWN SOLUTION GRAVIMETRIC DETERMINATION OF SULFATE IN AN UNKNOWN SOLUTION AIM The main objective of this experiment is to determine the concentration of sulfate ion in an unknown solution by using gravimetry. INTRODUCTION

More information

Chapter 11. Reactivity of metals

Chapter 11. Reactivity of metals Chapter 11 Reactivity of metals 11.1 Comparing reactivities of common metals 11.2 The metal reactivity series 11.3 Chemical equations 11.4 Metal reactivity series and the tendency of metals to form positive

More information

28. Some reactions of alcohols Student Sheet

28. Some reactions of alcohols Student Sheet 28. Some reactions of alcohols Student Sheet In these experiments you will be introduced to some of the reactions of the alcohol functional group. Intended lesson outcomes By the end of this practical

More information

Please write the balanced net ionic reaction for each one. Then answer the accompanying question.

Please write the balanced net ionic reaction for each one. Then answer the accompanying question. AP Chemistry Net Ionic Rx Practice Test A CLASS SET PLEASE RETURN!! Please write the balanced net ionic reaction for each one. Then answer the accompanying question. 1) A piece of potassium is dropped

More information

Compounds & Reactions Week 1. Writing Formulas & Balancing Equations. Write the chemical formula for each molecular (covalent) compound.

Compounds & Reactions Week 1. Writing Formulas & Balancing Equations. Write the chemical formula for each molecular (covalent) compound. Compounds & Reactions Week 1 Name Writing Formulas & Balancing Equations Write the chemical formula for each ionic compound. 1. Lithium fluoride 2. Copper (II) chloride 3. Manganese (II) oxide 4. Potassium

More information