,Chapter 01: Introduction
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1. A tentative explanation for a set of observations that can be tested by f
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urther experimentation is referred to as
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A) a hypothesis. B) a law.
ED C) a theory. E D ED E D ED
D) none of the above. Ans: A
E D EDCategory: Easy
ED ED ED E D E D
Section: 1.2 E D
2. A concise verbal or mathematical statement of a relationship between phenomena t
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hat is always the same under the same conditions is referred to as
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A) a hypothesis. B) a law.
ED C) a theory. E D ED E D ED
D) none of the above. Ans: B
E D Category: Easy
ED ED ED ED E D E D
Section: 1.2 E D
3. A unifying principle that explains a body of facts and relations is referred to as
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A) a hypothesis. B) a law.
ED C) a theory. E D ED E D ED
D) none of the above. Ans: C
E D Category: Easy
ED ED ED ED E D E D
Section: 1.2 E D
4. Complete the following sentence. A hypothesis is
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A) a tentative explanation for a set of observations that can be tested by f
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urther experimentation. ED
B) a statement describing a relationship between phenomena that is always the
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same under the same conditions.
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C) a unifying principle that explains a body of facts and relations.
ED ED ED ED ED ED ED ED ED ED
D) a model used to visualize the invisib
ED ED ED ED ED ED
le. Ans: A
ED E D
Category: Easy Section: 1.2 E D E D
5. Complete the following sentence. A scientific law is
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A) a tentative explanation for a set of observations that can be tested by f
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urther experimentation. ED
B) a statement describing a relationship between phenomena that is always the
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same under the same conditions.
ED ED ED ED
C) a unifying principle that explains a body of facts and relations.
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D) a model used to visualize the invisib
ED ED ED ED ED ED
le. Ans: B
ED E D
Category: Easy Section: 1.2 E D E D
6. Complete the following sentence. A theory is
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A) a tentative explanation for a set of observations that can be tested by f
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urther experimentation. ED
B) a statement describing a relationship between phenomena that is always the
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same under the same conditions.
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C) a unifying principle that explains a body of facts and relations.
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D) a model used to visualize the invisib
ED ED ED ED ED ED
le. Ans: C
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Category: Easy Section: 1.2 E D E D
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, Chapter 01: Introductio ED ED
n
7. Choose the response that includes all the items listed below that are pure substances.
ED ED ED ED ED ED ED ED ED ED ED ED ED
i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup
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A) i, iii, v
E D ED B) ii, iv
ED C) i, iii, iv D) iv only E D ED E D ED ED E D ED
E) all of them are pure Ans: B E DCategory: Easy ED ED ED ED ED E D E D
Section: 1.2 E D
8. Which of the following is an example of a physical property?
ED ED ED ED ED ED ED ED ED ED
A) corrosiveness of sulfuric acid ED ED ED
B) toxicity of cyanide ED ED
C) flammability of gasoline ED ED
D) neutralization of stomach acid with an antacid ED ED ED ED ED ED
E) lead becomes a liquid when heated to 601
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C Ans: E
ED E D Category: Easy E D
Section: 1.4 E D
9. Which one of the following is an example of a physical property?
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A) dynamite explodes D) ice floats on top of liquid water
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B) meat rots if it is not refrigerated
ED E) a silver platter tarnishes
ED ED ED ED ED ED ED ED
C) gasoline burns ED
Ans: D Category: Easy Section: 1.4
E D E D E D
10. Which one of the following represents a physical change?
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A) water, when heated to 100 C, forms steam
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B) bleach turns hair yellow ED ED ED
C) sugar, when heated, becomes brown ED ED ED ED
D) milk turns sour ED ED
E) apples, when exposed to air, turn bro ED ED ED ED ED ED
wn Ans: A
ED E D
Category: Easy Section: 1.4 E D E D
11. All of the following are properties of sodium. Which one is a physical prop
ED ED ED ED ED ED ED E D ED ED ED ED ED
erty of sodium?
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A) It is a surface turns black when first exposed to air.
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B) It is a solid at 25 C and changes to a liquid when heated to 98 C.
ED ED ED ED ED ED ED ED ED ED ED ED ED ED
C) When placed in water it sizzles and a gas is formed.
ED ED ED ED ED ED ED ED ED ED
D) When placed in contact with chlorine it forms a compound that melts at 801 C.
ED ED ED ED ED ED ED ED ED ED ED ED ED
E) Sodium is never found as the pure metal in natED ED ED ED ED ED ED ED ED
ure. Ans: B
ED Category: Easy
E D E D
Section: 1.4 E D
12. All of the following are properties of tin. Which one is a chemical property of tin?
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A) Tin can be hammered into a thin sheet.
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B) At –40 C a sheet of tin crumbles to a gray powder.
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C) Tin melts at 231.9 C. ED ED ED
D) When a bar of tin is bent, it emits an audible “cry”.
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E) Tin erodes when added to hydrochloric acid, and a clear gas fo
ED ED ED ED ED ED ED ED ED ED ED
rms. Ans: E ED Category: Medium
E D Section: 1.4 E D E D
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, Chapter 01: Introductio ED ED
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13. Which one of the following represents a chemical change?
ED ED ED ED ED ED ED ED
A) boiling water to form steam ED ED ED ED
B) burning a piece of coal ED ED ED ED
C) heating lead until it melts ED ED ED ED
D) mixing iron filings and sand at room temperature
ED ED ED ED ED ED ED
E) breaking glass ED
Ans: B Category: Medium Section: 1.4
E D E D E D
14. Which of the following does not represent a chemical change?
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A) a freshly cut apple turns brown
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B) milk turns sour on standing at room temperature
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C) when cooled to 0 C, liquid water becomes ice
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D) frying an egg ED ED
E) fermentation of sugar to alcohol ED ED ED ED ED
Ans: C Category: Easy
E D E D
Section: 1.4 ED
15. The SI prefixes nano and deci represent, respectively:
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A) 10– 9 and 10– ED ED D) 109 and 10– 6.
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6
.
ED
B) 106 and 10– 3. ED E)
ED 10– 9 and 10–
ED ED ED ED
1
. ED
C) 103 and 10– 3. ED ED ED
16. Ans: E Category: Easy Section: 1.7
E D E D
The SI prefixes milli and mega represent, respectively:
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A) 106 and 10– 6. ED D) 10– 3 and 109.
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B) 10– 3 and 106. ED ED E) 10– 6 and 10–
ED ED ED ED
3
. ED
C) 103 and 10– 6. ED ED ED
17.
Ans: B Category: Easy Section: 1.7
E D E D
The SI prefixes kilo and centi represent, respectively:
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A) 103 and 10– 2. ED D) 10– 6 and 102.
ED ED ED ED ED
–1
6
B) 10 and 10 . ED E)
ED 102 and 10– 3.
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C) 10– 3 and 10– ED ED ED
18. A2. nanometer corresponds to:
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–2
meters. Easy Section: 1.7 D) 10– 9 meters.
ED
A)
Ans: 10 A– 3 Category:
E D
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B) 10 meters. ED ED E) 10– 12 meters. ED ED
–6
C) 10 meters. ED ED
Ans: D Category: Easy Section: 1.7
E D E D E D
19. A microliter corresponds to:
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A) 10– 2 liters. B) 10– 3 liters. C) 10– 6 liters. D) 10– 9 liters. E) 10–
ED ED E D ED ED E D ED ED E D ED ED ED
12
ED liters. Ans: C
ED ED Category: Easy E D Section: 1.7 E D E D
Page 3 ED
ED ED
1. A tentative explanation for a set of observations that can be tested by f
ED ED ED ED ED ED ED ED ED ED ED ED ED
urther experimentation is referred to as
ED ED ED ED ED
A) a hypothesis. B) a law.
ED C) a theory. E D ED E D ED
D) none of the above. Ans: A
E D EDCategory: Easy
ED ED ED E D E D
Section: 1.2 E D
2. A concise verbal or mathematical statement of a relationship between phenomena t
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hat is always the same under the same conditions is referred to as
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A) a hypothesis. B) a law.
ED C) a theory. E D ED E D ED
D) none of the above. Ans: B
E D Category: Easy
ED ED ED ED E D E D
Section: 1.2 E D
3. A unifying principle that explains a body of facts and relations is referred to as
ED ED ED ED ED ED ED ED ED ED ED ED ED ED
A) a hypothesis. B) a law.
ED C) a theory. E D ED E D ED
D) none of the above. Ans: C
E D Category: Easy
ED ED ED ED E D E D
Section: 1.2 E D
4. Complete the following sentence. A hypothesis is
ED ED ED E D ED ED
A) a tentative explanation for a set of observations that can be tested by f
ED ED ED ED ED ED ED ED ED ED ED ED ED
urther experimentation. ED
B) a statement describing a relationship between phenomena that is always the
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same under the same conditions.
ED ED ED ED
C) a unifying principle that explains a body of facts and relations.
ED ED ED ED ED ED ED ED ED ED
D) a model used to visualize the invisib
ED ED ED ED ED ED
le. Ans: A
ED E D
Category: Easy Section: 1.2 E D E D
5. Complete the following sentence. A scientific law is
ED ED ED E D ED ED ED
A) a tentative explanation for a set of observations that can be tested by f
ED ED ED ED ED ED ED ED ED ED ED ED ED
urther experimentation. ED
B) a statement describing a relationship between phenomena that is always the
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same under the same conditions.
ED ED ED ED
C) a unifying principle that explains a body of facts and relations.
ED ED ED ED ED ED ED ED ED ED
D) a model used to visualize the invisib
ED ED ED ED ED ED
le. Ans: B
ED E D
Category: Easy Section: 1.2 E D E D
6. Complete the following sentence. A theory is
ED ED ED E D ED ED
A) a tentative explanation for a set of observations that can be tested by f
ED ED ED ED ED ED ED ED ED ED ED ED ED
urther experimentation. ED
B) a statement describing a relationship between phenomena that is always the
ED ED ED ED ED ED ED ED ED ED ED
same under the same conditions.
ED ED ED ED
C) a unifying principle that explains a body of facts and relations.
ED ED ED ED ED ED ED ED ED ED
D) a model used to visualize the invisib
ED ED ED ED ED ED
le. Ans: C
ED E D
Category: Easy Section: 1.2 E D E D
Page 1 ED
, Chapter 01: Introductio ED ED
n
7. Choose the response that includes all the items listed below that are pure substances.
ED ED ED ED ED ED ED ED ED ED ED ED ED
i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup
ED ED ED ED ED ED ED ED
A) i, iii, v
E D ED B) ii, iv
ED C) i, iii, iv D) iv only E D ED E D ED ED E D ED
E) all of them are pure Ans: B E DCategory: Easy ED ED ED ED ED E D E D
Section: 1.2 E D
8. Which of the following is an example of a physical property?
ED ED ED ED ED ED ED ED ED ED
A) corrosiveness of sulfuric acid ED ED ED
B) toxicity of cyanide ED ED
C) flammability of gasoline ED ED
D) neutralization of stomach acid with an antacid ED ED ED ED ED ED
E) lead becomes a liquid when heated to 601
ED ED ED ED ED ED ED
C Ans: E
ED E D Category: Easy E D
Section: 1.4 E D
9. Which one of the following is an example of a physical property?
ED ED ED ED ED ED ED ED ED ED ED
A) dynamite explodes D) ice floats on top of liquid water
ED ED ED ED ED ED ED
B) meat rots if it is not refrigerated
ED E) a silver platter tarnishes
ED ED ED ED ED ED ED ED
C) gasoline burns ED
Ans: D Category: Easy Section: 1.4
E D E D E D
10. Which one of the following represents a physical change?
ED ED ED ED ED ED ED ED
A) water, when heated to 100 C, forms steam
ED ED ED ED ED ED
B) bleach turns hair yellow ED ED ED
C) sugar, when heated, becomes brown ED ED ED ED
D) milk turns sour ED ED
E) apples, when exposed to air, turn bro ED ED ED ED ED ED
wn Ans: A
ED E D
Category: Easy Section: 1.4 E D E D
11. All of the following are properties of sodium. Which one is a physical prop
ED ED ED ED ED ED ED E D ED ED ED ED ED
erty of sodium?
ED ED
A) It is a surface turns black when first exposed to air.
ED ED ED ED ED ED ED ED ED ED
B) It is a solid at 25 C and changes to a liquid when heated to 98 C.
ED ED ED ED ED ED ED ED ED ED ED ED ED ED
C) When placed in water it sizzles and a gas is formed.
ED ED ED ED ED ED ED ED ED ED
D) When placed in contact with chlorine it forms a compound that melts at 801 C.
ED ED ED ED ED ED ED ED ED ED ED ED ED
E) Sodium is never found as the pure metal in natED ED ED ED ED ED ED ED ED
ure. Ans: B
ED Category: Easy
E D E D
Section: 1.4 E D
12. All of the following are properties of tin. Which one is a chemical property of tin?
ED ED ED ED ED ED ED E D ED ED ED ED ED ED ED
A) Tin can be hammered into a thin sheet.
ED ED ED ED ED ED ED
B) At –40 C a sheet of tin crumbles to a gray powder.
ED ED ED ED ED ED ED ED ED ED
C) Tin melts at 231.9 C. ED ED ED
D) When a bar of tin is bent, it emits an audible “cry”.
ED ED ED ED ED ED ED ED ED ED ED
E) Tin erodes when added to hydrochloric acid, and a clear gas fo
ED ED ED ED ED ED ED ED ED ED ED
rms. Ans: E ED Category: Medium
E D Section: 1.4 E D E D
Page 2 ED
, Chapter 01: Introductio ED ED
n
13. Which one of the following represents a chemical change?
ED ED ED ED ED ED ED ED
A) boiling water to form steam ED ED ED ED
B) burning a piece of coal ED ED ED ED
C) heating lead until it melts ED ED ED ED
D) mixing iron filings and sand at room temperature
ED ED ED ED ED ED ED
E) breaking glass ED
Ans: B Category: Medium Section: 1.4
E D E D E D
14. Which of the following does not represent a chemical change?
ED ED ED ED ED ED ED ED ED
A) a freshly cut apple turns brown
ED ED ED ED ED
B) milk turns sour on standing at room temperature
ED ED ED ED ED ED ED
C) when cooled to 0 C, liquid water becomes ice
ED ED ED ED ED ED ED
D) frying an egg ED ED
E) fermentation of sugar to alcohol ED ED ED ED ED
Ans: C Category: Easy
E D E D
Section: 1.4 ED
15. The SI prefixes nano and deci represent, respectively:
ED ED ED ED ED ED ED
A) 10– 9 and 10– ED ED D) 109 and 10– 6.
ED ED ED ED
6
.
ED
B) 106 and 10– 3. ED E)
ED 10– 9 and 10–
ED ED ED ED
1
. ED
C) 103 and 10– 3. ED ED ED
16. Ans: E Category: Easy Section: 1.7
E D E D
The SI prefixes milli and mega represent, respectively:
ED ED ED ED ED ED ED
A) 106 and 10– 6. ED D) 10– 3 and 109.
ED ED ED ED ED
B) 10– 3 and 106. ED ED E) 10– 6 and 10–
ED ED ED ED
3
. ED
C) 103 and 10– 6. ED ED ED
17.
Ans: B Category: Easy Section: 1.7
E D E D
The SI prefixes kilo and centi represent, respectively:
ED ED ED ED ED ED ED
A) 103 and 10– 2. ED D) 10– 6 and 102.
ED ED ED ED ED
–1
6
B) 10 and 10 . ED E)
ED 102 and 10– 3.
ED ED ED ED
C) 10– 3 and 10– ED ED ED
18. A2. nanometer corresponds to:
ED ED ED
–2
meters. Easy Section: 1.7 D) 10– 9 meters.
ED
A)
Ans: 10 A– 3 Category:
E D
ED ED ED ED
B) 10 meters. ED ED E) 10– 12 meters. ED ED
–6
C) 10 meters. ED ED
Ans: D Category: Easy Section: 1.7
E D E D E D
19. A microliter corresponds to:
ED ED ED
A) 10– 2 liters. B) 10– 3 liters. C) 10– 6 liters. D) 10– 9 liters. E) 10–
ED ED E D ED ED E D ED ED E D ED ED ED
12
ED liters. Ans: C
ED ED Category: Easy E D Section: 1.7 E D E D
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