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