Answers Crowley Credit Recovery Physics AUnit Test

Temperature and Heat Answers

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Val warms up some soup on the stove. Assuming no phase change has occurred, what effect does warming have on the soup?

Its particles have less kinetic energy.

Its particles have more kinetic energy.

Its specific heat increases.

Its specific heat decreases.

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Elements with low specific heat values have which characteristic?

low atomic mass

high thermal energy

low kinetic energy

low number of atoms per gram

Which best describes the relationship between heat, internal energy, and thermal energy?

Internal energy is heat that flows, and heat is the part of thermal energy that can be transferred.

Internal energy is thermal energy that flows, and thermal energy is the part of heat that can be transferred.

Thermal energy is heat that flows, and heat is the part of internal energy that can be transferred.

Heat is thermal energy that flows, and thermal energy is the part of internal energy that can be transferred.

When the kinetic energy of particles in a substance decreases, what also decreases?

The size of the particles in the substance.

The number of particles in the substance.

The substance’s specific heat.

The substance’s temperature.

It requires 2,500 joules to raise a certain amount of water (c = 4.186 J/g°C) from 20.0°C to 60.0°C.

15 g

40 g

63 g

80 g

Water has a specific heat of 4.186 J/g°C. How much heat is required to increase 10.0 g of water from 25.0°C to 30.0°C?

5.0 J

21 J

42 J

209 J

Jared made a study chart about heat, temperature, kinetic energy, and thermal energy.

Add “potential energy” to the description of temperature.

Switch the term “heat” with the term “thermal energy.”

Change kinetic energy description from “energy of motion” to “stored energy.”

Replace the term “temperature” with “internal energy.”

What are the units for measuring specific heat?

degrees Celsius per gram

joules per degrees Celsius

joules per gram degree Celsius

degrees Celsius per joule gram

Zoe finds that the temperature of a substance is 12 degrees Celsius. What does this tell Zoe about the substance?

Its internal energy is less than 12 degrees Celsius.

Its average kinetic energy is 12 on the Celsius scale.

It has a potential energy of 12 degrees Celsius.

It has a specific heat of 12 on the Celsius scale.

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Temperature and Heat Answers

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