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General Chemistry The Essential Concept 7Th Edition Raymond By Chang - Test Bank
General Chemistry The Essential Concept 7Th Edition Raymond By Chang - Test Bank
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,Chapter 01: Introductione e
1. A tentative explanation for a set of observations that can be tested by further
e e e e e e e e e e e e e
eexperimentation is referred to as e e e e
A) a hypothesis. B) a law. C) a theory. D) none of the above.
e e e e e e e e e
eAns: A Category: Easy Section: 1.2
e e e
2. A concise verbal or mathematical statement of a relationship between phenomena that is
e e e e e e e e e e e e
ealways the same under the same conditions is referred to as
e e e e e e e e e e
A) a hypothesis. B) a law. C) a theory. D) none of the above.
e e e e e e e e e
eAns: B Category: Easy Section: 1.2
e e e
3. A unifying principle that explains a body of facts and relations is referred to as
e e e e e e e e e e e e e e
A) a hypothesis. B) a law. C) a theory. D) none of the above.
e e e e e e e e e
eAns: C Category: Easy Section: 1.2
e e e
4. Complete the following sentence. A hypothesis is
e e e e e e
A) a tentative explanation for a set of observations that can be tested by further
e e e e e e e e e e e e e
experimentation.
e
B) a statement describing a relationship between phenomena that is always the same
e e e e e e e e e e e
under the same conditions.
e e e e
C) a unifying principle that explains a body of facts and relations.
e e e e e e e e e e
D) a model used to visualize the invisible.
e e e e e e
eAns: A Category: Easy Section: 1.2
e e e
5. Complete the following sentence. A scientific law is
e e e e e e e
A) a tentative explanation for a set of observations that can be tested by further
e e e e e e e e e e e e e
experimentation.
e
B) a statement describing a relationship between phenomena that is always the same
e e e e e e e e e e e
under the same conditions.
e e e e
C) a unifying principle that explains a body of facts and relations.
e e e e e e e e e e
D) a model used to visualize the invisible.
e e e e e e
eAns: B Category: Easy Section: 1.2
e e e
6. Complete the following sentence. A theory is
e e e e e e
A) a tentative explanation for a set of observations that can be tested by further
e e e e e e e e e e e e e
experimentation.
e
B) a statement describing a relationship between phenomena that is always the same
e e e e e e e e e e e
under the same conditions.
e e e e
C) a unifying principle that explains a body of facts and relations.
e e e e e e e e e e
D) a model used to visualize the invisible.
e e e e e e
eAns: C Category: Easy Section: 1.2
e e e
Page 1 e
, Chapter 01: Introduction e e
7. Choose the response that includes all the items listed below that are pure substances.
e e e e e e e e e e e e e
i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup
e e e e e e e e
A) i, iii, v B) ii, iv C) i, iii, iv D) iv only E) all of them are pure
e e e e e e e e e e e e e e e
eAns: B Category: Easy Section: 1.2
e e e
8. Which of the following is an example of a physical property?
e e e e e e e e e e
A) corrosiveness of sulfuric acid e e e
B) toxicity of cyanide e e
C) flammability of gasoline e e
D) neutralization of stomach acid with an antacid e e e e e e
E) lead becomes a liquid when heated to 601 C
e e e e e e e
Ans: E Category: Easy Section: 1.4
e e e e
9. Which one of the following is an example of a physical property?
e e e e e e e e e e e
A) dynamite explodes D) ice floats on top of liquid water
e e e e e e e
B) meat rots if it is not refrigerated e E) a silver platter tarnishes
e e e e e e e e
C) gasoline burns e
Ans: D Category: Easy Section: 1.4
e e e
10. Which one of the following represents a physical change?
e e e e e e e e
A) water, when heated to 100 C, forms steam e e e e e e
B) bleach turns hair yellow e e e
C) sugar, when heated, becomes brown e e e e
D) milk turns sour e e
E) apples, when exposed to air, turn brown e e e e e e
Ans: A Category: Easy Section: 1.4
e e e e
11. All of the following are properties of sodium. Which one is a physical property of
e e e e e e e e e e e e e e
sodium?
e
A) It is a surface turns black when first exposed to air.
e e e e e e e e e e
B) It is a solid at 25 C and changes to a liquid when heated to 98 C.
e e e e e e e e e e e e e e
C) When placed in water it sizzles and a gas is formed.
e e e e e e e e e e
D) When placed in contact with chlorine it forms a compound that melts at 801 C.
e e e e e e e e e e e e e
E) Sodium is never found as the pure metal in nature. e e e e e e e e e
Ans: B Category: Easy Section: 1.4
e e e e
12. All of the following are properties of tin. Which one is a chemical property of tin?
e e e e e e e e e e e e e e e
A) Tin can be hammered into a thin sheet.
e e e e e e e
B) At –40 C a sheet of tin crumbles to a gray powder.
e e e e e e e e e e
C) Tin melts at 231.9 C. e e e
D) When a bar of tin is bent, it emits an audible “cry”.
e e e e e e e e e e e
E) Tin erodes when added to hydrochloric acid, and a clear gas forms.
e e e e e e e e e e e
Ans: E Category: Medium Section: 1.4
e e e e
Page 2 e
, Chapter 01: Introduction e e
13. Which one of the following represents a chemical change?
e e e e e e e e
A) boiling water to form steam e e e e
B) burning a piece of coal e e e e
C) heating lead until it melts e e e e
D) mixing iron filings and sand at room temperature
e e e e e e e
E) breaking glass e
Ans: B Category: Medium Section: 1.4
e e e
14. Which of the following does not represent a chemical change?
e e e e e e e e e
A) a freshly cut apple turns brown
e e e e e
B) milk turns sour on standing at room temperature
e e e e e e e
C) when cooled to 0 C, liquid water becomes ice
e e e e e e e
D) frying an egg e e
E) fermentation of sugar to alcohol e e e e
Ans: C Category: Easy Section: 1.4
e e e e
15. The SI prefixes nano and deci represent, respectively:
e e e e e e e
A) 10– 9 and 10– 6. e e D) 109 and 10– 6.
e e e e e
B) 106 and 10– 3. e E) e 10– 9 and 10– 1. e e e e e
3 –3
C) 10 and 10 . e e e
Ans: E Category: Easy Section: 1.7
e e
16. The SI prefixes milli and mega represent, respectively:
e e e e e e e
A) 106 and 10– 6. e D) 10– 3 and 109.
e e e e e
B) 10– 3 and 106. e e E) 10– 6 and 10– 3.
e e e e e
3 –6
C) 10 and 10 . e e e
Ans: B Category: Easy Section: 1.7
e e
17. The SI prefixes kilo and centi represent, respectively:
e e e e e e e
A) 103 and 10– 2. e D) 10– 6 and 102.
e e e e e
–1
6
B) 10 and 10 . e E) e 102 and 10– 3. e e e e
C) 10– 3 and 10– 2. e e e e
Ans: A Category: Easy Section: 1.7
e
18. A nanometer corresponds to:
e e e
A) 10–2 meters. e e D) 10–9 meters.
e e
B) 10–3 meters. e e E) 10–12 meters.
e e
–6
C) 10 meters. e e
Ans: D Category: Easy Section: 1.7
e e e
19. A microliter corresponds to:
e e e
A) 10– 2 liters. B) 10– 3 liters. C) 10– 6 liters. D) 10– 9 liters. E) 10– 12 liters.
e e e e e e e e e e e e e e
Ans: C Category: Easy Section: 1.7
e e e e
Page 3 e
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