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Question 1

What is heat capacity?

Answer 1

Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius.

Question 2

True or False: Heat capacity is an intensive property.

Answer 2

False: Heat capacity is an extensive property.

Question 3

What is the formula for calculating heat capacity (C)?

Answer 3

C = Q / ΔT, where Q is the heat added and ΔT is the change in temperature.

Question 4

Fill in the blank: The heat capacity of a substance depends on its _____ and _____ state.

Answer 4

mass; phase

Question 5

What is specific heat capacity?

Answer 5

Specific heat capacity is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Question 6

Which has a higher specific heat capacity: water or iron?

Answer 6

Water

Question 7

True or False: The specific heat capacity of a substance can change with temperature.

Answer 7

True

Question 8

What is the unit of heat capacity?

Answer 8

Joules per degree Celsius (J/°C)

Question 9

Multiple Choice: Which of the following has the highest specific heat capacity? A) Air B) Water C) Copper D) Sand

Answer 9

B) Water

Question 10

What is the relationship between heat capacity and temperature change?

Answer 10

Heat capacity is directly proportional to the amount of heat added and the resulting temperature change.

Question 11

Fill in the blank: The heat capacity of a solid typically _____ as temperature increases.

Answer 11

increases

Question 12

What is molar heat capacity?

Answer 12

Molar heat capacity is the amount of heat required to raise the temperature of one mole of a substance by one degree Celsius.

Question 13

True or False: Heat capacity is the same for all phases of a substance.

Answer 13

False

Question 14

What is the heat capacity of water in J/(kg·°C)?

Answer 14

Approximately 4184 J/(kg·°C)

Question 15

Multiple Choice: Which factor does NOT affect the heat capacity of a substance? A) Mass B) Temperature C) Color D) Phase

Answer 15

C) Color

Question 16

What is the heat capacity of a 2 kg substance that absorbs 1000 J of heat and experiences a temperature change of 5 °C?

Answer 16

Heat capacity is 40 J/°C.

Question 17

Fill in the blank: The specific heat capacity of metals is generally _____ than that of water.

Answer 17

lower

Question 18

What is the significance of high specific heat capacity in water?

Answer 18

It helps regulate the Earth’s climate and maintain stable temperatures in aquatic environments.

Question 19

Multiple Choice: Which of the following substances would have the highest heat capacity? A) Lead B) Water C) Mercury D) Aluminum

Answer 19

B) Water

Question 20

True or False: Heat capacity is useful for understanding thermal properties of materials.

Answer 20

True

Question 21

What happens to heat capacity as the mass of a substance increases?

Answer 21

Heat capacity increases with the mass of the substance.

Question 22

What is the difference between heat capacity and thermal conductivity?

Answer 22

Heat capacity measures how much heat energy a substance can store, while thermal conductivity measures how quickly heat can pass through a substance.

Question 23

Fill in the blank: The heat capacity of gases is generally _____ than that of liquids and solids.

Answer 23

lower

Question 24

What is the equation for calculating the change in heat (Q) using specific heat capacity?

Answer 24

Q = mcΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature.