Question 1

Sugar is a pure substance.

Accepted Answer

A) True 
 B)False

Question 2

Water is a mixture.

Accepted Answer

A) True 
 B)False

Question 3

A chemical change occurs when matter does not change its composition.

Accepted Answer

A) True 
 B)False

Question 4

How much heat (kJ) is absorbed by 948.0 g of water in order for the temperature to increase from  to

Accepted Answer

A)  7.5
B)  31.4
C)  30.2
D)  29.7
E)  none of the aboveF) A) and D)
G) A) and B)

Question 5

Which of the following statements about compounds is TRUE?

Accepted Answer

A)  A substance that cannot be broken down into simpler substances.
B)  A pure substance that has variable composition throughout.
C)  A substance composed of two or more elements in fixed,definite proportions.
D)  A substance that is not as common as pure elements.
E)  none of the aboveF) D) and E)
G) A) and C)

Question 6

Which of the following items is a mixture?

Accepted Answer

A)  water
B)  helium
C)  brass
D)  sugar
E)  none of the aboveF) A) and B)
G) A) and C)

Question 7

How would you classify raisin bran?

Accepted Answer

A)  pure substance-compound
B)  mixture-heterogeneous
C)  pure substance-element
D)  mixture-homogeneous
E)  none of the aboveF) A) and C)
G) A) and B)

Question 8

A 15.0 gram lead ball at 25.0°C was heated with 40.5 joules of heat.Given the specific heat of lead is 0.128 J/g∙°C,what is the final temperature of the lead?

Accepted Answer

A)  21.1°C
B)  46.1°C
C)  77.8°C
D)  0.844°C
E)  none of the aboveF) C) and D)
G) B) and E)

Question 9

Absolute zero is equivalent to a temperature of -273 K.

Accepted Answer

A) True 
 B)False

Question 10

A solution is an example of a (an) :

Accepted Answer

A)  pure substance.
B)  element.
C)  compound.
D)  homogeneous mixture.
E)  heterogeneous mixture.F) B) and D)
G) B) and C)

Question 11

In a solid substance,the atoms or molecules oscillate and vibrate about a fixed point.

Accepted Answer

A) True 
 B)False

Question 12

Mixtures of miscible liquids that differ in their boiling points may be separated by distillation.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is an example of a crystalline solid that shows an arrangement of long-range,repeating order?

Accepted Answer

A)  glass
B)  salt
C)  plastic
D)  rubber
E)  none of the aboveF) B) and E)
G) B) and D)

Question 14

The odor of gasoline is a chemical property.

Accepted Answer

A) True 
 B)False

Question 15

A compound is a substance that cannot be broken down into a simpler substance.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following items is a chemical property?

Accepted Answer

A)  the paint color on a new red Corvette
B)  the odor of spearmint gum
C)  the melting and boiling point of water
D)  the tarnishing of a copper statue
E)  none of the aboveF) B) and E)
G) A) and C)

Question 17

Which of the following items is a pure substance?

Accepted Answer

A)  air
B)  seawater
C)  brass
D)  ice
E)  none of the aboveF) C) and D)
G) A) and D)

Question 18

The coldest temperature possible is 0 K.

Accepted Answer

A) True 
 B)False

Question 19

Consider the following specific heats of metals.

If the same amount of heat is added to 50.0 g samples of each of the metals,which are all at the same temperature,which metal will reach the highest temperature?

Accepted Answer

A)  aluminum
B)  copper
C)  gold
D)  iron
E)  silverF) A) and D)
G) B) and E)

Question 20

Which among the following statements is false?

Accepted Answer

A)  A solid has a definite shape and a definite volume.
B)  A liquid has a definite volume; but it has no definite shape.
C)  A gas has neither definite volume nor definite shape.
D)  Both solids and liquids are incompressible while gases are compressible.
E)  none of the aboveF) C) and E)
G) B) and D)

Exam 3: Matter and Energy

A compound is a substance that cannot be broken down into a simpler substance.

Correct AnswerverifiedShow Answer

Which of the following items is a chemical property?

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Which of the following is an example of a crystalline solid that shows an arrangement of long-range,repeating order?

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Water is a mixture.

Correct AnswerverifiedShow Answer

A chemical change occurs when matter does not change its composition.

Correct AnswerverifiedShow Answer

Absolute zero is equivalent to a temperature of -273 K.

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Consider the following specific heats of metals. If the same amount of heat is added to 50.0 g samples of each of the metals,which are all at the same temperature,which metal will reach the highest temperature?

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How would you classify raisin bran?

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The odor of gasoline is a chemical property.

Correct AnswerverifiedShow Answer

Which of the following items is a mixture?

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Mixtures of miscible liquids that differ in their boiling points may be separated by distillation.

Correct AnswerverifiedShow Answer

Sugar is a pure substance.

Correct AnswerverifiedShow Answer

Which of the following statements about compounds is TRUE?

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A solution is an example of a (an) :

Correct AnswerverifiedShow Answer

How much heat (kJ) is absorbed by 948.0 g of water in order for the temperature to increase from to

Correct AnswerverifiedShow Answer

The coldest temperature possible is 0 K.

Correct AnswerverifiedShow Answer

A 15.0 gram lead ball at 25.0°C was heated with 40.5 joules of heat.Given the specific heat of lead is 0.128 J/g∙°C,what is the final temperature of the lead?

Correct AnswerverifiedShow Answer

In a solid substance,the atoms or molecules oscillate and vibrate about a fixed point.

Correct AnswerverifiedShow Answer

Which of the following items is a pure substance?

Correct AnswerverifiedShow Answer

Which among the following statements is false?

Correct AnswerverifiedShow Answer

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