,Chapter01:Introduction
s s
1. A tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation is referred to as
ss ss ss ss ss
A) a hypothesis. B) a law.
ss C) a theory. ss ss
D) none of the above.Ans: A Category: Easy
ss ss ss
Section: 1.2
ss ss
2. A concise verbal or mathematical statement of a relationship between phenomena that
ss ss ss ss ss ss ss ss ss ss ss
isalways the same under the same conditions is referred to as
ss ss ss ss ss ss ss ss ss ss ss
A) a hypothesis. B) a law.
ss C) a theory. ss ss
D) none of the above.Ans: B Category: Easy
ss ss ss
Section: 1.2
ss ss
3. A unifying principle that explains a body of facts and relations is referred to as
ss ss ss ss ss ss ss ss ss ss ss ss ss ss
A) a hypothesis. B) a law.
ss C) a theory. ss ss
D) none of the above.Ans: C Category: Easy
ss ss ss
Section: 1.2
ss ss
4. Complete the following sentence. A hypothesis is
ss ss ss ss ss
A) a tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation.
ss
B) a statement describing a relationship between phenomena that is always the
ss ss ss ss ss ss ss ss ss ss
sameunder the same conditions.
ss ss ss ss
C) a unifying principle that explains a body of facts and relations.
ss ss ss ss ss ss ss ss ss ss
D) a model used to visualize the
ss ss ss ss ss
invisible.Ans: A
ss Category:
Easy Section: 1.2
5. Complete the following sentence. A scientific law is
ss ss ss ss ss ss
A) a tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation.
ss
B) a statement describing a relationship between phenomena that is always the
ss ss ss ss ss ss ss ss ss ss
sameunder the same conditions.
ss ss ss ss
C) a unifying principle that explains a body of facts and relations.
ss ss ss ss ss ss ss ss ss ss
D) a model used to visualize the
ss ss ss ss ss
invisible.Ans: B
ss Category:
Easy Section: 1.2
6. Complete the following sentence. A theory is
ss ss ss ss ss
A) a tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation.
ss
B) a statement describing a relationship between phenomena that is always the
ss ss ss ss ss ss ss ss ss ss
sameunder the same conditions.
ss ss ss ss
C) a unifying principle that explains a body of facts and relations.
ss ss ss ss ss ss ss ss ss ss
D) a model used to visualize the
ss ss ss ss ss
invisible.Ans: C
ss Category:
Easy
ss Section: 1.2
Page 1 ss
, Chapter 01: Introduction ss ss
7. Choose the response that includes all the items listed below that are pure substances.
ss ss ss ss ss ss ss ss ss ss ss ss ss
i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup
ss ss ss ss ss ss ss ss
A) i, iii, v ssB) ii, iv C) i, iii, iv D) iv only E) all
ss ss ss ss ss ss ss
of them are pureAns: B Category: Easy Section: 1.2
ss ss ss ss s ss
8. Which of the following is an example of a physical property?
ss ss ss ss ss ss ss ss ss ss
A) corrosiveness of sulfuric acid ss ss ss
B) toxicity of cyanide ss ss
C) flammability of gasoline ss ss
D) neutralization of stomach acid with an antacid ss ss ss ss ss ss
E) lead becomes a liquid when heated to 601 C
ss ss ss ss ss ss ss
Ans: E Category: Easy Section: 1.4
ss ss s s ss
9. Which one of the following is an example of a physical property?
ss ss ss ss ss ss ss ss ss ss ss
A) dynamite explodes D) ice floats on top of liquid water ss ss ss ss ss ss ss
B) meat rots if it is not refrigerated E) a silver platter tarnishes
ss ss ss ss ss ss s ss ss
C) gasoline burns ss
Ans: D Category: Easy Section: 1.4 s s s s
10. Which one of the following represents a physical change?
ss ss ss ss ss ss ss ss
A) water, when heated to 100 C, forms steam ss ss ss ss ss ss
B) bleach turns hair yellow ss ss ss
C) sugar, when heated, becomes brown ss ss ss ss
D) milk turns sour ss ss
E) apples, when exposed to air, turn ss ss ss ss ss
brownAns: A
ss Category:
Easy Section: 1.4
11. All of the following are properties of sodium. Which one is a physical property
ss ss ss ss ss ss ss ss ss ss ss ss ss
ofsodium?
ss
A) It is a surface turns black when first exposed to air.
ss ss ss ss ss ss ss ss ss ss
B) It is a solid at 25 C and changes to a liquid when heated to 98 C.
ss ss ss ss ss ss ss ss ss ss ss ss ss ss
C) When placed in water it sizzles and a gas is formed. ss ss ss ss ss ss ss ss ss ss
D) When placed in contact with chlorine it forms a compound that melts at 801 C.
ss ss ss ss ss ss ss ss ss ss ss ss ss
E) Sodium is never found as the pure metal in ss ss ss ss ss ss ss ss
nature.Ans: B
ss Category: Easy
Section: 1.4 ss
12. All of the following are properties of tin. Which one is a chemical property of tin?
ss ss ss ss ss ss ss ss ss ss ss ss ss ss
A) Tin can be hammered into a thin sheet.
ss ss ss ss ss ss ss
B) At –40 C a sheet of tin crumbles to a gray powder.
ss ss ss ss ss ss ss ss ss ss
C) Tin melts at 231.9 C. ss ss ss
D) When a bar of tin is bent, it emits an audible ―cry‖. ss ss ss ss ss ss ss ss ss ss ss
E) Tin erodes when added to hydrochloric acid, and a clear gas
ss ss ss ss ss ss ss ss ss ss
forms.Ans: E
ss Category: Medium Section: 1.4 ss
Page 2 ss
, Chapter 01: Introduction ss ss
13. Which one of the following represents a chemical change?
ss ss ss ss ss ss ss ss
A) boiling water to form steam ss ss ss ss
B) burning a piece of coal ss ss ss ss
C) heating lead until it melts ss ss ss ss
D) mixing iron filings and sand at room temperature ss ss ss ss ss ss ss
E) breaking glass ss
Ans: B Category: Medium Section: 1.4 s s s s ss
14. Which of the following does not represent a chemical change?
ss ss ss ss ss ss ss ss ss
A) a freshly cut apple turns brown
ss ss ss ss ss
B) milk turns sour on standing at room temperature ss ss ss ss ss ss ss
C) when cooled to 0 C, liquid water becomes ice ss ss ss ss ss ss ss
D) frying an egg ss ss
E) fermentation of sugar to alcohol ss ss ss ss
Ans: C Category: Easy
ss ss
Section:
s s
1.4
15. 1T5 .h e SI prefixes nano and deci represent, respectively:
ss ss ss ss ss ss ss
A) 10–9 and 10–6. D) 109 and 10–6.
ss ss ss ss
–3
6
B) 10 and 10 . ss E) 10–9 and 10–1. ss ss ss
C) 103 and 10–3. ss ss
Ans: E Category: Easy Section:
s s s s
1.7
16. 16.
The SI prefixes milli and mega represent, respectively:
ss ss ss ss ss ss ss
A) 106 and 10–6. ss D) 10–3 and 109. ss ss ss
B) 10–3 and 106. ssE) 10–6 and 10–3. ss ss ss
3 –6
C) 10 and 10 . ss ss
17. The SI prefixes kilo and centi represent, respectively:
ss ss ss ss ss ss ss
A) 103 and 10–2. ss D) 10–6 and 102. ss s s s s
B) 106 and 10–1. ss E) 102 and 10–3. ss s s s s
–3 –2
C) 10 and 10 . ss ss
Ans: A Category: Easy Section: 1.7 s s s s
18. A nanometer corresponds to:
ss ss ss
A) 10–2 meters. D) ss 10–9 meters.s s
–3
B) 10 meters. E) ss 10–12 meters. ss
C) 10–6 meters. ss
Ans: D Category: Easy Section: 1.7 s s s s
19. A microliter corresponds to:
ss ss ss
A) 10–2 liters. B) 10–3 liters.C)s s ss s 10–6 liters. D) 10–9 liters. E) 10– 12
ss ss ss ss ss ss
liters.Ans: C Category: Easy s s s s Section: 1.7 ss
Page 3 ss
s s
1. A tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation is referred to as
ss ss ss ss ss
A) a hypothesis. B) a law.
ss C) a theory. ss ss
D) none of the above.Ans: A Category: Easy
ss ss ss
Section: 1.2
ss ss
2. A concise verbal or mathematical statement of a relationship between phenomena that
ss ss ss ss ss ss ss ss ss ss ss
isalways the same under the same conditions is referred to as
ss ss ss ss ss ss ss ss ss ss ss
A) a hypothesis. B) a law.
ss C) a theory. ss ss
D) none of the above.Ans: B Category: Easy
ss ss ss
Section: 1.2
ss ss
3. A unifying principle that explains a body of facts and relations is referred to as
ss ss ss ss ss ss ss ss ss ss ss ss ss ss
A) a hypothesis. B) a law.
ss C) a theory. ss ss
D) none of the above.Ans: C Category: Easy
ss ss ss
Section: 1.2
ss ss
4. Complete the following sentence. A hypothesis is
ss ss ss ss ss
A) a tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation.
ss
B) a statement describing a relationship between phenomena that is always the
ss ss ss ss ss ss ss ss ss ss
sameunder the same conditions.
ss ss ss ss
C) a unifying principle that explains a body of facts and relations.
ss ss ss ss ss ss ss ss ss ss
D) a model used to visualize the
ss ss ss ss ss
invisible.Ans: A
ss Category:
Easy Section: 1.2
5. Complete the following sentence. A scientific law is
ss ss ss ss ss ss
A) a tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation.
ss
B) a statement describing a relationship between phenomena that is always the
ss ss ss ss ss ss ss ss ss ss
sameunder the same conditions.
ss ss ss ss
C) a unifying principle that explains a body of facts and relations.
ss ss ss ss ss ss ss ss ss ss
D) a model used to visualize the
ss ss ss ss ss
invisible.Ans: B
ss Category:
Easy Section: 1.2
6. Complete the following sentence. A theory is
ss ss ss ss ss
A) a tentative explanation for a set of observations that can be tested by
ss ss ss ss ss ss ss ss ss ss ss ss
furtherexperimentation.
ss
B) a statement describing a relationship between phenomena that is always the
ss ss ss ss ss ss ss ss ss ss
sameunder the same conditions.
ss ss ss ss
C) a unifying principle that explains a body of facts and relations.
ss ss ss ss ss ss ss ss ss ss
D) a model used to visualize the
ss ss ss ss ss
invisible.Ans: C
ss Category:
Easy
ss Section: 1.2
Page 1 ss
, Chapter 01: Introduction ss ss
7. Choose the response that includes all the items listed below that are pure substances.
ss ss ss ss ss ss ss ss ss ss ss ss ss
i. orange juice ii. steam iii. ocean water iv. oxygen v. vegetable soup
ss ss ss ss ss ss ss ss
A) i, iii, v ssB) ii, iv C) i, iii, iv D) iv only E) all
ss ss ss ss ss ss ss
of them are pureAns: B Category: Easy Section: 1.2
ss ss ss ss s ss
8. Which of the following is an example of a physical property?
ss ss ss ss ss ss ss ss ss ss
A) corrosiveness of sulfuric acid ss ss ss
B) toxicity of cyanide ss ss
C) flammability of gasoline ss ss
D) neutralization of stomach acid with an antacid ss ss ss ss ss ss
E) lead becomes a liquid when heated to 601 C
ss ss ss ss ss ss ss
Ans: E Category: Easy Section: 1.4
ss ss s s ss
9. Which one of the following is an example of a physical property?
ss ss ss ss ss ss ss ss ss ss ss
A) dynamite explodes D) ice floats on top of liquid water ss ss ss ss ss ss ss
B) meat rots if it is not refrigerated E) a silver platter tarnishes
ss ss ss ss ss ss s ss ss
C) gasoline burns ss
Ans: D Category: Easy Section: 1.4 s s s s
10. Which one of the following represents a physical change?
ss ss ss ss ss ss ss ss
A) water, when heated to 100 C, forms steam ss ss ss ss ss ss
B) bleach turns hair yellow ss ss ss
C) sugar, when heated, becomes brown ss ss ss ss
D) milk turns sour ss ss
E) apples, when exposed to air, turn ss ss ss ss ss
brownAns: A
ss Category:
Easy Section: 1.4
11. All of the following are properties of sodium. Which one is a physical property
ss ss ss ss ss ss ss ss ss ss ss ss ss
ofsodium?
ss
A) It is a surface turns black when first exposed to air.
ss ss ss ss ss ss ss ss ss ss
B) It is a solid at 25 C and changes to a liquid when heated to 98 C.
ss ss ss ss ss ss ss ss ss ss ss ss ss ss
C) When placed in water it sizzles and a gas is formed. ss ss ss ss ss ss ss ss ss ss
D) When placed in contact with chlorine it forms a compound that melts at 801 C.
ss ss ss ss ss ss ss ss ss ss ss ss ss
E) Sodium is never found as the pure metal in ss ss ss ss ss ss ss ss
nature.Ans: B
ss Category: Easy
Section: 1.4 ss
12. All of the following are properties of tin. Which one is a chemical property of tin?
ss ss ss ss ss ss ss ss ss ss ss ss ss ss
A) Tin can be hammered into a thin sheet.
ss ss ss ss ss ss ss
B) At –40 C a sheet of tin crumbles to a gray powder.
ss ss ss ss ss ss ss ss ss ss
C) Tin melts at 231.9 C. ss ss ss
D) When a bar of tin is bent, it emits an audible ―cry‖. ss ss ss ss ss ss ss ss ss ss ss
E) Tin erodes when added to hydrochloric acid, and a clear gas
ss ss ss ss ss ss ss ss ss ss
forms.Ans: E
ss Category: Medium Section: 1.4 ss
Page 2 ss
, Chapter 01: Introduction ss ss
13. Which one of the following represents a chemical change?
ss ss ss ss ss ss ss ss
A) boiling water to form steam ss ss ss ss
B) burning a piece of coal ss ss ss ss
C) heating lead until it melts ss ss ss ss
D) mixing iron filings and sand at room temperature ss ss ss ss ss ss ss
E) breaking glass ss
Ans: B Category: Medium Section: 1.4 s s s s ss
14. Which of the following does not represent a chemical change?
ss ss ss ss ss ss ss ss ss
A) a freshly cut apple turns brown
ss ss ss ss ss
B) milk turns sour on standing at room temperature ss ss ss ss ss ss ss
C) when cooled to 0 C, liquid water becomes ice ss ss ss ss ss ss ss
D) frying an egg ss ss
E) fermentation of sugar to alcohol ss ss ss ss
Ans: C Category: Easy
ss ss
Section:
s s
1.4
15. 1T5 .h e SI prefixes nano and deci represent, respectively:
ss ss ss ss ss ss ss
A) 10–9 and 10–6. D) 109 and 10–6.
ss ss ss ss
–3
6
B) 10 and 10 . ss E) 10–9 and 10–1. ss ss ss
C) 103 and 10–3. ss ss
Ans: E Category: Easy Section:
s s s s
1.7
16. 16.
The SI prefixes milli and mega represent, respectively:
ss ss ss ss ss ss ss
A) 106 and 10–6. ss D) 10–3 and 109. ss ss ss
B) 10–3 and 106. ssE) 10–6 and 10–3. ss ss ss
3 –6
C) 10 and 10 . ss ss
17. The SI prefixes kilo and centi represent, respectively:
ss ss ss ss ss ss ss
A) 103 and 10–2. ss D) 10–6 and 102. ss s s s s
B) 106 and 10–1. ss E) 102 and 10–3. ss s s s s
–3 –2
C) 10 and 10 . ss ss
Ans: A Category: Easy Section: 1.7 s s s s
18. A nanometer corresponds to:
ss ss ss
A) 10–2 meters. D) ss 10–9 meters.s s
–3
B) 10 meters. E) ss 10–12 meters. ss
C) 10–6 meters. ss
Ans: D Category: Easy Section: 1.7 s s s s
19. A microliter corresponds to:
ss ss ss
A) 10–2 liters. B) 10–3 liters.C)s s ss s 10–6 liters. D) 10–9 liters. E) 10– 12
ss ss ss ss ss ss
liters.Ans: C Category: Easy s s s s Section: 1.7 ss
Page 3 ss
