P1 Specific Heat Capacity

Question 1

What is specific heat capacity?

Answer 1

The amount of energy required to raise the temperature of 1 kg of a substance by 1 degree Celsius.

Question 2

True or False: Specific heat capacity is the same for all materials.

Answer 2

False

Question 3

Fill in the blank: The unit of specific heat capacity is ______.

Answer 3

J/kg°C

Question 4

Which formula is used to calculate the energy transferred using specific heat capacity?

Answer 4

Q = mcΔT

Question 5

In the formula Q = mcΔT, what does ‘m’ represent?

Answer 5

Mass of the substance in kilograms.

Question 6

What does ‘c’ stand for in the equation Q = mcΔT?

Answer 6

Specific heat capacity of the substance.

Question 7

What does ΔT represent in the formula Q = mcΔT?

Answer 7

Change in temperature in degrees Celsius.

Question 8

True or False: Water has a high specific heat capacity compared to metals.

Answer 8

True

Question 9

What is the specific heat capacity of water?

Answer 9

4,200 J/kg°C

Question 10

Multiple Choice: Which material has a lower specific heat capacity? A) Water B) Iron C) Wood

Answer 10

B) Iron

Question 11

What happens to the temperature of a substance when it absorbs energy?

Answer 11

The temperature increases.

Question 12

Fill in the blank: To cool a substance, it must lose ______.

Answer 12

Energy

Question 13

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

Answer 13

True

Question 14

What is the specific heat capacity of air approximately?

Answer 14

1,000 J/kg°C

Question 15

Short Answer: Why is specific heat capacity important in everyday life?

Answer 15

It affects how quickly substances heat up or cool down, influencing climate, cooking, and heating systems.

Question 16

Multiple Choice: What is a common application of specific heat capacity? A) Weather forecasting B) Cooking C) Both A and B

Answer 16

C) Both A and B

Question 17

What does it mean if a substance has a high specific heat capacity?

Answer 17

It requires a lot of energy to change its temperature.

Question 18

Fill in the blank: The specific heat capacity of a material is a measure of its ______.

Answer 18

Thermal inertia

Question 19

True or False: Specific heat capacity can be used to determine the amount of energy needed for heating processes.

Answer 19

True

Question 20

Short Answer: How does specific heat capacity affect climate?

Answer 20

It influences how different regions absorb and release heat, affecting temperature and weather patterns.

Question 21

What is the relationship between mass, specific heat capacity, and energy transferred?

Answer 21

Energy transferred is directly proportional to mass and specific heat capacity.

Question 22

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

Answer 22

B) Water

Question 23

Fill in the blank: When a substance changes state, its specific heat capacity can ______.

Answer 23

Change

Question 24

What does the term ‘thermal conductivity’ relate to?

Answer 24

The ability of a material to conduct heat, which is different from specific heat capacity.

Question 25

True or False: A substance with a low specific heat capacity heats up quickly.

Answer 25

True

Question 26

Short Answer: How can specific heat capacity be experimentally determined?

Answer 26

By measuring the temperature change of a substance when a known amount of energy is added.