Specific Heat Problems

Front

What is specific heat?

Back

Specific heat is the amount of energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

Front

What is the formula to calculate heat energy (Q)?

Back

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

Front

If a substance has a specific heat of 1 J/g°C, how much energy is needed to raise the temperature of 100 g by 10°C?

Back

Q = 100 g * 1 J/g°C * 10°C = 1000 J.

Front

What does a high specific heat indicate about a substance?

Back

A high specific heat indicates that the substance can absorb a lot of heat without a significant change in temperature.

Front

What is the specific heat of water?

Back

The specific heat of water is 4.18 J/g°C.

Front

How do you calculate the change in temperature (ΔT)?

Back

ΔT = final temperature - initial temperature.

Front

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

Back

The temperature of the substance increases.

Front

What is the specific heat of aluminum?

Back

The specific heat of aluminum is 0.21 cal/g°C.

Front

If 20 g of water cools from 25°C to 20°C, how much heat energy is released?

Back

Q = m * c * ΔT = 20 g * 4.18 J/g°C * (20°C - 25°C) = -83.6 J (heat is released).

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance due to their motion.