Question 1

Which statement concerning changes in matter is FALSE?

Accepted Answer

A)  A physical change alters the appearance of a substance,but not its identity.
B)  A chemical change alters the identity of a substance.
C)  A chemical change always results in the production of a new substance.
D)  A chemical change is also called a chemical reaction.
E)  Melting and freezing are chemical changes that change both the appearance of the substance as well as the identity of the substance.F) A) and B)
G) A) and C)

Question 2

Which of the following terms is most appropriate when classifying an apple?

Accepted Answer

A)  pure substance
B)  compound
C)  heterogeneous mixture
D)  homogeneous mixture
E)  solutionF) D) and E)
G) B) and E)

Question 3

The presence of some error is a natural consequence of any measurement.

Accepted Answer

A) True 
 B)False

Question 4

When hydrogen (H2) and chlorine (Cl2) gases are mixed,hydrogen chloride (HCl) is produced.Hydrogen chloride is classified as what type of matter?

Accepted Answer

A)  an element
B)  a compound
C)  a homogeneous mixture
D)  a heterogeneous mixture
E)  a solutionF) A) and D)
G) C) and D)

Question 5

Which temperature would feel the hottest?

Accepted Answer

A)  100°C
B)  100°F
C)  100 K
D)  All temperatures would feel equally hot.E) B) and C)
F) C) and D)

Question 6

What does the prefix "centi-" mean?

Accepted Answer

A)  10-1
B)  10-2
C)  10-3
D)  102
E)  103F) D) and E)
G) None of the above

Question 7

Which statement concerning the classification of matter is FALSE?

Accepted Answer

A)  All matter is either pure substance or a compound.
B)  An element is a pure substance that generally cannot be changed into a simpler form of matter.
C)  A compound is a pure substance made up of two or more different elements combined in a definite,reproducible way.
D)  A pure substance is composed of only one type of component.
E)  A mixture is the physical combination of two or more pure substances in which each substance retains its own identity.F) A) and B)
G) A) and E)

Question 8

Which branch of science primarily involves the study of matter and the changes it undergoes?

Accepted Answer

A)  biology
B)  technology
C)  physics
D)  chemistry
E)  All of the choices are correct.F) C) and E)
G) B) and C)

Question 9

The terms mass and weight are identical.

Accepted Answer

A) True 
 B)False

Question 10

How many centimeters correspond to 15.68 kilometers?

Accepted Answer

A)  1.568 × 106 cm
B)  1.568 × 105 cm
C)  1.568 × 10-4 cm
D)  1568 cm
E)  1.569 cmF) B) and E)
G) B) and D)

Question 11

What kind of change always results in the formation of new materials?

Accepted Answer

A)  molecular
B)  exothermic
C)  endothermic
D)  physical
E)  chemicalF) B) and D)
G) C) and D)

Question 12

What is the appropriate number of significant figures necessary to express the result of the calculation below? 
(51.6) × (3.1416)

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  5F) A) and B)
G) A) and C)

Question 13

What are the five phases of the Study Cycle?

Accepted Answer

A)  study,flash cards,concept maps,class notes,solve problems
B)  big ideas,flash cards,repetition,participation,assess
C)  attend,review,study,repetition,assess
D)  preview,attend,study,repetition,identify big ideas
E)  preview,attend,review,study,assessF) D) and E)
G) A) and D)

Question 14

What Fahrenheit temperature corresponds to -40.0°C?

Accepted Answer

A)  -8°F
B)  16.8°F
C)  -36.9°F
D)  -40.0°F
E)  -1.94°FF) All of the above
G) B) and D)

Question 15

Which of the following is an example of physical change?

Accepted Answer

A)  boiling water
B)  burning paper
C)  a metal losing electrons to become a cation
D)  cooking eggs
E)  lighting a matchF) A) and B)
G) All of the above

Question 16

What type of property of matter is independent of the quantity of the substance?

Accepted Answer

A)  chemical
B)  physical
C)  extensive
D)  intensive
E)  nuclearF) A) and B)
G) B) and E)

Question 17

Which of the following is NOT a physical property of matter?

Accepted Answer

A)  odor
B)  compressibility
C)  flash point
D)  melting point
E)  colorF) B) and C)
G) A) and E)

Question 18

If a person smokes 10.0 packs of cigarettes a week and each cigarette contains 5.00 mg of tar,how many years will she have to smoke to inhale 0.250 pounds of tar? 
[20 cigarettes = 1 pack,1 pound = 454 g and 1 year = 52 weeks]

Accepted Answer

A)  2.18 y
B)  2.18 × 10-2 y
C)  1.06 y
D)  28.6 y
E)  0.556 yF) A) and B)
G) B) and E)

Question 19

Which is the summary of a large amount of scientific information?

Accepted Answer

A)  hypothesis
B)  theory
C)  scientific law
D)  technology
E)  scientific methodF) A) and B)
G) D) and E)

Question 20

In which state does matter have an indefinite shape and definite volume?

Accepted Answer

A)  solid
B)  liquid
C)  gas
D)  All of the choices are correct.
E)  None of the choices are correct.F) C) and D)
G) A) and C)

Exam 1: Chemistry - Methods and Measurement

What kind of change always results in the formation of new materials?

Correct AnswerverifiedShow Answer

What does the prefix "centi-" mean?

Correct AnswerverifiedShow Answer

What Fahrenheit temperature corresponds to -40.0°C?

Correct AnswerverifiedShow Answer

What is the appropriate number of significant figures necessary to express the result of the calculation below? (51.6) × (3.1416)

Correct AnswerverifiedShow Answer

Which of the following is NOT a physical property of matter?

Correct AnswerverifiedShow Answer

The presence of some error is a natural consequence of any measurement.

Correct AnswerverifiedShow Answer

Which statement concerning the classification of matter is FALSE?

Correct AnswerverifiedShow Answer

When hydrogen (H2) and chlorine (Cl2) gases are mixed,hydrogen chloride (HCl) is produced.Hydrogen chloride is classified as what type of matter?

Correct AnswerverifiedShow Answer

The terms mass and weight are identical.

Correct AnswerverifiedShow Answer

In which state does matter have an indefinite shape and definite volume?

Correct AnswerverifiedShow Answer

Which branch of science primarily involves the study of matter and the changes it undergoes?

Correct AnswerverifiedShow Answer

Which statement concerning changes in matter is FALSE?

Correct AnswerverifiedShow Answer

What are the five phases of the Study Cycle?

Correct AnswerverifiedShow Answer

Which of the following terms is most appropriate when classifying an apple?

Correct AnswerverifiedShow Answer

If a person smokes 10.0 packs of cigarettes a week and each cigarette contains 5.00 mg of tar,how many years will she have to smoke to inhale 0.250 pounds of tar? [20 cigarettes = 1 pack,1 pound = 454 g and 1 year = 52 weeks]

Correct AnswerverifiedShow Answer

Which is the summary of a large amount of scientific information?

Correct AnswerverifiedShow Answer

Which of the following is an example of physical change?

Correct AnswerverifiedShow Answer

Which temperature would feel the hottest?

Correct AnswerverifiedShow Answer

What type of property of matter is independent of the quantity of the substance?

Correct AnswerverifiedShow Answer

How many centimeters correspond to 15.68 kilometers?

Correct AnswerverifiedShow Answer

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When hydrogen (H₂) and chlorine (Cl₂) gases are mixed,hydrogen chloride (HCl) is produced.Hydrogen chloride is classified as what type of matter?

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