Chapter 1—Matter, Measurements, and Calculations MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
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8.
The mass of an object is
a. the force between the object and the earth.
b. a measure of the amount of matter in the object.
c. the amount of space the object occupies.
d. depends on the location...
1. The mass of an object is
a. the force between the object and the earth.
b. a measure of the amount of matter in the object.
c. the amount of space the object occupies.
d. depends on the location of the object on the earth.
ANS: B PTS: 1
2. Any two objects are attracted to each other by _____ .
a. gravity c. magnetism
b. electrostatic forces d. all of them
ANS: A PTS: 1
3. How is the weight of an object influenced when the gravitational force on the object is
increased?
a. it decreases c. it is unchanged
b. it increases d. it equals the mass
ANS: B PTS: 1
4. The weight of an object is
a. a measure of the gravitational force pulling the object toward the earth.
b. equal to the mass of the matter in the object.
c. a measure of the space occupied by the object.
d. the same at any location on the earth.
ANS: A PTS: 1
5. The fact that gold does not corrode is a ______ property
a. physical b. personal c. real d. chemical
ANS: D PTS: 1
6. Which of the following represents a physical change in matter?
a. A substance solidifies at 443 K.
b. A substance produces a gas and a solid when heated.
c. A substance burns when heated.
d. A substance changes color when exposed to air.
ANS: A PTS: 1
7. The melting of ice to liquid water is correctly classified as
a. a chemical change.
b. a physical change.
c. both a chemical and a physical change.
d. neither a chemical nor physical change.
ANS: B PTS: 1
8. Which of the following is a physical property of matter?
, a. it does not burn
b. produces a gas when placed in an acid
c. freezes at 10F
d. the surface turns black in air
ANS: C PTS: 1
9. Which of the following is a chemical property of matter?
a. color c. freezing point
b. density d. flammability
ANS: D PTS: 1
10. As two clear liquid solutions are thoroughly mixed, a red solid forms. This change is
most likely _____ .
a. physical. c. neither chemical nor physical.
b. chemical. d. both chemical and physical.
ANS: B PTS: 1
11. The limit of chemical subdivision of an element is the _____ .
a. atom b. molecule c. proton d. compound
ANS: A PTS: 1
12. Which of the following substances are composed of heteroatomic molecules?
a. an iron nail b. oxygen c. copper wire d. water
ANS: D PTS: 1
13. A molecule represented by O-O-O must be classified as
a. homoatomic and polyatomic. c. heteroatomic and polyatomic.
b. homoatomic and monoatomic. d. heteroatomic and monoatomic.
ANS: A PTS: 1
14. Which of the following terms correctly applies to a molecule of CO2?
a. triatomic, heteroatomic c. triatomic, homoatomic
b. polyatomic, diatomic d. diatomic, heteroatomic
ANS: A PTS: 1
15. Table salt, NaCl is best classified as a(n) _____ .
a. compound c. homogeneous mixture
b. element d. heterogeneous mixture
ANS: A PTS: 1
16. The limit of physical subdivision of pure H2O is _____ .
a. the atom b. the molecule c. the element d. a proton
ANS: B PTS: 1
17. Homoatomic pure substances are known as _____ .
a. protons b. elements c. compound d. molecules
ANS: B PTS: 1
, 18. After heating, a pure substance, A, is found to produce both B and C. What can be said
about the substance A?
a. It is an element c. It is either an element or compound
b. It is a compound d. Impossible to predict
ANS: B PTS: 1
19. Two pure substances A and B react to form a new pure substance C. From this, we
may conclude that
a. A and B are both elements
b. C is a compound, A and B may or may not be elements
c. C is an element, A and B are compounds
d. A, B, and C are all compounds
ANS: B PTS: 1
20. Which of the following is an example of a homogeneous mixture?
a. NaOH solution
b. mortar (mixture of water, sand and cement)
c. vinegar and oil salad dressing
d. more than one response is correct
ANS: A PTS: 1
21. Which of the following consists of a single chemical species?
a. solution c. heterogeneous mixture
b. homogeneous mixture d. compound
ANS: D PTS: 1
22. Early measurements of length were based on
a. dimensions of astronomical bodies. c. dimensions of bodies of water.
b. dimensions of the human body. d. distances between cities.
ANS: B PTS: 1
23. The metric system is a measurement system that is
a. the official system for all nations of the world.
b. only used by a few of the nations of the world.
c. commonly used by U.S. physical scientists.
d. used exclusively in chemical calculations.
ANS: C PTS: 1
24. The basic unit of length in the metric system is the _____ .
a. mil b. millimeter c. foot d. meter
ANS: D PTS: 1
25. Which of the following is an SI unit?
a. gram b. liter c. meter d. calorie
ANS: C PTS: 1
26. The prefix centi- denotes what fraction of a basic unit?
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