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 change because, in a chemical change, the original substance changes its a. composition. d. mass. b. size. e. state. c. shape. 2. A gas is proved to be carbon dioxide if: a. a glowing splint bursts into flames in the gas. b. a wet piece of red litmus goes blue in the gas. c. limewater goes milky when shaken with the gas. d. a burning splint causes a small explosion in the gas. e. an unlit splint ignites in the gas. 3. A bright yellow solid substance is known to be an element. It is brittle and will shatter if hit with a hammer. It is a poor conductor of both heat and electricity. This element is best called a(n) a. alkali metal. d. noble gas. b. metal. e. periodic element. c. nonmetal. 4. In the Periodic Table, elements with similar properties are grouped in a. diagonal rows. d. vertical columns. b. horizontal rows. e. rectangular blocks. c. periods. 5. XF 2 is the formula of a metallic fluoride. The formula of the corresponding metallic oxide of X is a. XO. d. X 2 O. b. XO 2. e. X 2 O 3. c. XO 4. 6. Atoms of element A have 2 electrons in their last occupied orbit. Atoms of element B have 7 electrons in their last occupied orbit. The formula of the compound formed between A and B is a. A 2 B. d. A 7 B 2. b. AB 2. e. AB 5. c. AB 3. 7. Select the correct corresponding name. a. Sn 2 SO 4 - tin(ii) sulfate d. Cu 2 PO 4 - copper(i) phosphate b. PbCO 3 - lead(iv) carbonate e. None of these is named correctly c. Fe(ClO 3 ) 3 - iron(iii) chlorate 8. When atoms form chemical bonds they can a. gain electrons only. d. lose or gain electrons only. b. lose electrons only. e. share electrons only. c. lose, gain, or share electrons. 1
9. A double displacement chemical reaction is the a. exchange of two different atoms between two compounds. b. displacement of one element in a compound by another element. c. breaking up of a compound to produce two different elements. d. joining together of two elements to form a compound. e. absorption of heat in a chemical reaction. 10. What is the reaction type classification for the following equation? CaCO 3 + SiO 2 CaSiO 3 + CO 2 a. double displacement d. single displacement b. synthesis e. none of these classifications c. decomposition Name each of the following Hazardous Household Product Symbols (HHPS) and describe the type of hazard it indicates. a. c. b. d. Short Answer 12. Lithium and oxygen react to form a compound. a. Draw Bohr diagrams of lithium and oxygen. b. Which is the metal and which is the nonmetal? c. Sketch Bohr diagrams showing the electron movement that occurs when lithium and oxygen react. More than one atom of each element may be necessary. d. What are the charges on the lithium and oxygen ions? e. Give the chemical formula and the chemical name of the compound formed. 13. Give the compound name or formula as required. K 2 S AlBr 3 Ag 2 O ZnF 2 sodium oxide lithium iodide beryllium chloride calcium nitride potassium phosphide magnesium hydride 2
14. Give the compound name or formula as required. CaCl 2 Sr 3 P 2 BaI 2 hydrogen chloride aluminum nitride zinc sulfide Na 3 N potassium oxide sodium fluoride 15. Give the compound name or formula as required. Na 2 CO 3 Sn(NO 3 ) 2 potassium bromide Cu(OH) 2 Al(HCO 3 ) 3 zinc chlorate potassium sulfate 16. Give the compound name or formula as required. SO 2 CF 4 NBr 3 CS 2 carbon dioxide silicon tetrabromide 17. Give three uses for fossil fuels and their products. calcium phosphate lead(iv) carbonate nitrogen phosphide chlorine oxide 18. A chemical reaction is represented by the following word equation: magnesium + sulfuric acid hydrogen + magnesium sulfate a. What are the products of this reaction? b. What are the reactants in this reaction? 19. Write word equations for the following chemical reactions. a. Tarnish (Ag 2 S) forms when a silver spoon is placed in sulfur. b. KOH and H 2 result when H 2 O and potassium are mixed. 20. One component of the haze found over industrial areas is ammonium sulfate. It occurs when ammonia and sulfuric acid are present in the air. Write out the word equation for this reaction. 21. Complete the following word equations. a. copper + silver nitrate + copper(ii) nitrate b. iron + iron(iii) oxide c. lead nitrate + lead iodide + potassium nitrate 22. Balance the following equation: PbS + O 2 PbO + SO 2 23. Balance the following equation: Al 4 C 3 + H 2 O Al(OH) 3 + CH 4 24. When sugar, C 6 H 12 O 6, is strongly heated, water is driven off and the element carbon is left (something similar occurs when toast burns). a. Write out a balanced chemical reaction for strongly heating sugar. b. Classify the reaction type. 3
25. Classify each of the following as either a synthesis or a decomposition reaction. a. Ca + Cl 2 CaCl 2 b. CaCO 3 CaO + CO 2 c. MgO + H 2 O Mg(OH) 2 d. 2 NaHCO 3 Na 2 CO 3 + H 2 O + CO 2 26. Write out balanced chemical equations for each of the following reactions and classify the reaction type. a. Sodium and oxygen react to form sodium oxide. b. Silver oxide when heated produces oxygen and silver. c. Magnesium carbonate when heated produces magnesium oxide and carbon dioxide. d. Bromine reacts with aluminum to form aluminum bromide. 4
Chemistry Chapters 5 and 6 Answer Section MULTIPLE CHOICE 1. ANS: A 2. ANS: C REF: AS LOC: DS7 3. ANS: C REF: UC LOC: UBC5 4. ANS: D 5. ANS: A 6. ANS: B 7. ANS: C 8. ANS: C 9. ANS: A REF: UC LOC: UBC3 10. ANS: E REF: UC LOC: UBC3 SHORT ANSWER 12. ANS: a. b. lithium is the metal and oxygen is the nonmetal. c. d. lithium - 1+ oxygen - 2- e. Li 2 O lithium oxide 13. ANS: K 2 S - potassium sulfide Ag 2 O - silver oxide AlBr 3 - aluminum bromide ZnF 2 - zinc fluoride sodium oxide - Na 2 O calcium nitride - Ca 3 N 2 lithium iodide LiI potassium phosphide - K 3 P beryllium chloride - BeCl 2 magnesium hydride - MgH 2 5
14. ANS: CaCl 2 - calcium chloride BaI 2 - barium iodide hydrogen chloride - HCl aluminum nitride - AlN zinc sulfide - ZnS 15. ANS: Na 2 CO 3 - sodium carbonate Cu(OH) 2 - copper(ii) hydroxide Mg 3 P 2 - magnesium phosphide Na 3 N - sodium nitride potassium oxide - K 2 O sodium fluoride - NaF potassium bromide - KBr Sn(NO 3 ) 2 - tin(ii) nitrate Al(HCO 3 ) 3 - aluminum hydrogen carbonate zinc chlorate - Zn(ClO 3 ) 2 calcium phosphate - Ca 3 (PO 4 ) 2 potassium sulfate - K 2 SO 4 lead(iv) carbonate - Pb(CO 3 ) 2 16. ANS: SO 2 - sulfur dioxide NBr 3 - nitrogen tribromide carbon dioxide - CO 2 silicon tetrabromide - SiBr 4 CF 4 - carbon tetrafluoride CS 2 - carbon disulfide nitrogen phosphide - NP chlorine oxide - Cl 2 O 17. ANS: Examples include: fuel, lubricants, waxes, asphalt, tar, fertilizers, plastics, rubber etc. REF: UC LOC: RST2 18. ANS: a. The products are hydrogen and magnesium sulfate. b. The reactants are magnesium and sulfuric acid. REF: UC LOC: UBC3 19. ANS: a. silver + sulfur silver sulfide b. potassium + water potassium hydroxide + hydrogen 20. ANS: ammonia + sulfuric acid ammonium sulfate 21. ANS: a. silver b. oxygen c. potassium iodide 6
22. ANS: 2 PbS + 3 O 2 2 PbO + 2 SO 2 23. ANS: Al 4 C 3 + 12 H 2 O 4 Al(OH) 3 + 3 CH 4 24. ANS: a. C 6 H 12 O 6 6 H 2 O + 6 C b. decomposition REF: UC LOC: UBC3, DS2 25. ANS: a. synthesis b. decomposition c. synthesis d. decomposition REF: UC LOC: UBC3 26. ANS: a. 4 Na + O 2 2 Na 2 O synthesis b. 2 Ag 2 O 4 Ag + O 2 decomposition c. MgCO 3 MgO + CO 2 decomposition d. 2 Al + 3 Br 2 2 AlBr 3 synthesis REF: UC LOC: UBC3, DS2 7