# Specific Heat (Grades 11-12)

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## Specific Heat

1.

According to Joule's Law, the internal energy of a gas is a function of the energy of its molecules.

2.

When working gas law problems, all temperatures must be converted to the

- Celsius scale.
- Fahrenheit scale.
- Boyle scale.
- Kelvin scale.

3.

What is the term used for the amount of heat per unit mass required to raise the temperature of a substance by one degree Celsius?

- temperature capacity
- latent heat
- specific heat
- relative heat

4.

What is the formulaic relationship between Q, C, m and [math]Delta[/math]T, where

Q is the amount of heat transferred to an object

C is the specific heat of that object

m is the mass of the object and

[math]Delta[/math]T is the change in temperature?

Q is the amount of heat transferred to an object

C is the specific heat of that object

m is the mass of the object and

[math]Delta[/math]T is the change in temperature?

- Q = Cm[math]Delta[/math]T
- Q = Cm/[math]Delta[/math]T
- C = [math]Delta[/math]T/mQ
- C = Qm[math]Delta[/math]T

5.

The SI unit for specific heat is 1 .

6.

Which of these substances has the highest specific heat, requiring the most amount of heat energy to raise its temperature by [math]1degC[/math]?

- iron
- wood
- oil
- water

7.

What is the specific heat of water?

- 4.186 J/g•°C
- 10 J/g•°C
- 1 kcal/g•°C
- 1 cal/kg•°C

8.

The specific heats of gases are generally expressed as molar specific heats because the number of moles is a more convenient measure of an amount of gas.

- True
- False

9.

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

[math]C=Q/(m*DeltaT)[/math]

[math]C=Q/(m*DeltaT)[/math]

10.

If 335 g of water at 65.5 °C loses 9750 J of heat, what is the final temperature of the water? Liquid water has a specific heat of 4.18 J/(g•°C).

[math]DeltaT=Q/(m*C)[/math]

[math]DeltaT=Q/(m*C)[/math]

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