Question 1

The number of calories needed to raise the temperature of 32 g of water from 12 °C to 54 °C is

Accepted Answer

A)  384 cal.
B)  1.3 cal.
C)  1300 cal.
D)  1700 cal.
E)  0.76 cal.

Question 2

Which of the following is an example of a physical change?

Accepted Answer

A)  grinding coffee beans
B)  baking a cake
C)  converting water to hydrogen and oxygen
D)  digesting a cheeseburger
E)  burning coal

Question 3

A mixture which has uniform properties is a ________ mixture.

Accepted Answer

The answer of A mixture which has uniform properties is...

Question 4

The primary substances of which all other things are composed are

Accepted Answer

A)  molecules.
B)  compounds.
C)  elements.
D)  electrons.
E)  protons.

Question 5

Air is a(n)

Accepted Answer

A)  compound.
B)  heterogeneous mixture.
C)  element.
D)  homogeneous mixture.
E)  None of the above.

Question 6

The energy in chemical bonds is kinetic energy.

Accepted Answer

A) True 
 B)False

Question 7

How many calories are required to raise the temperature of a 35.0 g sample of iron from 25 °C to 35 °C? Iron has a specific heat of 0.108 cal/g °C.

Accepted Answer

A)  38 cal
B)  1.1 cal
C)  3.8 cal
D)  93 cal
E)  130 cal

Question 8

Water vapor is a gas.

Accepted Answer

A) True 
 B)False

Question 9

Gold in a wedding ring is a(n)

Accepted Answer

A)  compound.
B)  heterogeneous mixture.
C)  element.
D)  homogeneous mixture.
E)  None of the above.

Question 10

Gold is an element.

Accepted Answer

A) True 
 B)False

Question 11

The phrase "ability to do work" is a definition of

Accepted Answer

A)  specific heat.
B)  energy.
C)  calorie.
D)  heating.
E)  cooling.

Question 12

A solid has a constant shape and volume.

Accepted Answer

A) True 
 B)False  True

Question 13

A heating curve illustrates

Accepted Answer

A)  what a substance looks like as it is heated.
B)  what happens to the particles of a substance as it is heated.
C)  what happens to the heat applied as the temperature is increased.
D)  the changes in the temperature and physical state of a substance as it is heated.
E)  the chemical changes that occur as the substance is heated.

Question 14

A temperature of 41 °F is the same as

Accepted Answer

A)  5 °C.
B)  310 °C.
C)  -9 °C.
D)  16 °C.
E)  42 °C.

Question 15

The dietary calorie (Cal)  is equal to

Accepted Answer

A)  1000 kilocalories.
B)  1000 calories.
C)  100 calories.
D)  10 calories.
E)  1 calorie.

Question 16

On a hot day, the thermometer read 95 °F. What is the temperature in degrees Celsius?

Accepted Answer

A)  77 °C
B)  113 °C
C)  35 °C
D)  63 °C
E)  178 °C

Question 17

A color of a substance is an example of a ________ property.

Accepted Answer

The answer of A color of a substance is an...

Question 18

An example of kinetic energy is

Accepted Answer

A)  a coiled spring.
B)  running water.
C)  a tree.
D)  natural gas.
E)  chemical energy. B

Question 19

The energy of motion is called ________ energy.

Accepted Answer

The answer of The energy of motion is called ________...

Question 20

If the temperature is - 55 °C, what is the corresponding temperature on the Kelvin scale?

Accepted Answer

A)  225 K
B)  218 K
C)  55 K
D)  273 K
E)  328 K B

Exam 3: Energy and Matter

The number of calories needed to raise the temperature of 32 g of water from 12 °C to 54 °C is

Correct AnswerverifiedShow Answer

Which of the following is an example of a physical change?

Correct AnswerverifiedShow Answer

A mixture which has uniform properties is a ________ mixture.

Correct AnswerverifiedShow Answer

The primary substances of which all other things are composed are

Correct AnswerverifiedShow Answer

Air is a(n)

Correct AnswerverifiedShow Answer

The energy in chemical bonds is kinetic energy.

Correct AnswerverifiedShow Answer

How many calories are required to raise the temperature of a 35.0 g sample of iron from 25 °C to 35 °C? Iron has a specific heat of 0.108 cal/g °C.

Correct AnswerverifiedShow Answer

Water vapor is a gas.

Correct AnswerverifiedShow Answer

Gold in a wedding ring is a(n)

Correct AnswerverifiedShow Answer

Gold is an element.

Correct AnswerverifiedShow Answer

The phrase "ability to do work" is a definition of

Correct AnswerverifiedShow Answer

A solid has a constant shape and volume.

Correct AnswerverifiedTrue

A heating curve illustrates

Correct AnswerverifiedShow Answer

A temperature of 41 °F is the same as

Correct AnswerverifiedShow Answer

The dietary calorie (Cal) is equal to

Correct AnswerverifiedShow Answer

On a hot day, the thermometer read 95 °F. What is the temperature in degrees Celsius?

Correct AnswerverifiedShow Answer

A color of a substance is an example of a ________ property.

Correct AnswerverifiedShow Answer

An example of kinetic energy is

Correct AnswerverifiedB

The energy of motion is called ________ energy.

Correct AnswerverifiedShow Answer

If the temperature is - 55 °C, what is the corresponding temperature on the Kelvin scale?

Correct AnswerverifiedB

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True

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B

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B