TEST I REVIEW. 1. All of the following are properties of antimony. Which one is not a

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1 TEST I REVIEW I Identify the letter of the choice that best completes the statement or answers the question. 1. All of the following are properties of antimony. Which one is not a physical property? a. It is a solid at room temperature. b. It has both yellow and gray forms (allotropes) in the solid state. c. It burns in an atmosphere of chlorine. d. It is one of the few substances that expands upon freezing. e. The gray form melts at 631 C. 2. The following properties describe zinc. Which one(s) is (are) chemical properties? I. It is bluish-white metal. II. It corrodes upon prolonged contact with moist air. III. Its density is 7.14 g/cm3. IV. It melts at 419 C. V. It conducts electricity. a. IV and V b. IV c. V 1

2 d. II, IV, and V e. II 3. Which response includes all of the following that involve chemical changes, and none that involve physical changes? I. souring of milk II. melting of silver III. digestion of food IV. burning of coal V. condensation of steam a. II and V b. I, III, and IV c. I, II, and III d. IV and V e. III, IV, and V 4. Which answer includes all of the following that are physical changes and no chemical changes? I. the electrolysis of molten sodium chloride to produce metallic sodium and gaseous chlorine II. the solidification of mercury by cooling 2

3 III. the reaction of hydrochloric acid with calcium carbonate IV. the mixing of water with ethyl alcohol V. cutting an iron bar into small pieces a. I and III b. II, IV, and V c. I and IV d. II, III, and V e. IV 5. Which answer lists all the substances below that are compounds and not any elements or mixtures? I. sodium chloride II. neon III. sulfur IV. water V. crude oil a. I, II, and III b. I, IV, and V c. IV and V d. II, III, and V e. I and IV 3

4 6. Which of the following is not a mixture? a. air b. steel c. seawater d. gasoline e. oxygen 7. Which mixture is incorrectly labeled? a. homogeneous - salt dissolved in water b. homogeneous - gasoline c. heterogeneous - the oxygen and nitrogen in a scuba tank d. homogeneous - aqueous solution of alcohol e. heterogeneous - bauxite (an aluminum ore) 9. Below is a list of common prefixes used in the SI and metric systems. Included with each is an abbreviation and meaning. Which set contains an error? a. mega- M 106 b. deci- d 10-1 c. centi- c 10-2 d. micro- m 10-6 e. kilo- k 103 4

5 10. Which of the following numbers has 4 significant figures? a b c d e How many millimeters are there in 25 feet? a mm b mm c mm d mm e mm 12. Convert 25.2 kilometers to inches. a in b in c in d in e in 5

6 20. At 25 C, one milliliter of mercury has a mass of 13.6 grams. How many liters of mercury are required to have a mass of 500 kg of mercury? a. 500 L b L c L d L e L 21. A metal cube having a mass of 112 grams is dropped into a graduated cylinder containing ml of water. This causes the water level to rise to ml. What is the density of the cube? a g/ml b g/ml c g/ml d g/ml e g/ml 22. The density of mercury is 13.6 g/cm3. What is the mass of 6.50 cm3 of mercury? a g b g 6

7 c g d g e g 23. The density of octane is g/cm3. What is the mass of 65.0 ml of octane? a. 110 g b g c g d g e g 24. What volume is occupied by 14.3 g of mercury? Density = 13.6 g/ml. a ml b ml c. 193 ml d ml e ml 25. The freezing point of argon is -189 C. What is its freezing point on the absolute temperature scale? a. 84 K b K 7

8 c. 461 K d. 112 K e. 72 K 26. Liquid propane boils at 231K. What is its boiling point in C? a. 42 C b. 315 C c. -42 C d. 504 C e C 27. Which of the following is the correct when is rounded to three significant figures. a. 385 b. 384 c d e

9 Answer 1. ANS: C 2. ANS: E 3. ANS: B 4. ANS: B 5. ANS: E 6. ANS: E 7. ANS: C 9. ANS: D 10. ANS: A 11. ANS: D 12. ANS: C 20. ANS: E 21. ANS: B 22. ANS: B 23. ANS: D 24. ANS: D 25. ANS: A 26. ANS: C 27. ANS: C II 1.Carry out the following operations, and express the answer with the appropriate number of significant figures: a. 78,132./2.50 = b (6104.5/35.359) = c. [(2.853 x 107) (1.200 x 105)] x = 2. On Ground Hog Day in 1789, the temperature dropped to a brisk oc in Hartford, CT (and you thought that it only got that cold in VT!). a. Express this temperature in of. 9

10 b. Express this temperature in Kelvins (K). 3. Gold has a density of g/ml and the mass of a single gold atom is amu. (NOTE: 1 amu = x g) a. Based on the above information, calculate the volume (cm3) occupied by a single gold atom. 4. from this list of elements: Kr, H, P, Al, Mg, F, Si, Na, S; pick the one that best fits each of the following descriptions. You may use each element only ONCE. a. an alkali metal: b. an alkaline earth metal: c. a noble gas: d. a halogen: e. a metalloid: f. a nonmetal listed in group IA: g. a metal that forms a 3+ ion: h. a nonmetal that forms a 2- ion: i. an element that resembles nitrogen: 5. Give the atomic symbol for the following elements: a. magnesium: b. silver: 10

11 c. potassium: d. xenon: 6. Give the name of the element for the following atomic symbols: a. Cr: b. Hg: c. Li: d. Au: 7. using the periodic table as a guide, predict the charge of the most stable ion of each of the following elements: a. Ba b. I c. O d. Se 7. Boron has two naturally-ocurring isotopes ( 10 B and 11 B), with atomic masses of amu and amu. If the natural abundances of these two isotopes are 19.9% and 80.1%, respectively, calculate the average atomic mass of boron. 11