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Thermal Energy
Vocabulary
Changes of State
Fill in the Blank
100

How do you change the state of an object?

You change the state of an object by adding or removing thermal energy.
100

"temperature at which a solid state changes to a liquid state"

melting point

100

When a solid changes to a liquid, what is it called? Is thermal energy added or removed?

Melting


Added

100

All objects in motion have _____________ energy. 

Kinetic

200

What is thermal energy?

Thermal energy is the total kinetic and potential energy of an object.

200

"the change of state from a gas to a liquid"

condensation

200

When a liquid changes to a solid, what is the name of the process? What happens to the thermal energy?

Freezing


Removed

200

Adding thermal energy to an object causes the particles to move faster (increased _____________ energy), or to get farther apart (increased ______________ energy), or to do both.

1. Kinetic

2. Potential

300

What happens when you add thermal energy to an object?

The kinetic and potential energy increases. The object has an increased temperature. 

300
"stored energy resulting from interactions between particles or objects"

potential energy

300

When liquid changes to a gas, what is the process called? Is thermal energy added or removed?

Vaporization


Added

300

When you add ______________ energy to ice, the temperature of the ice increases, which means that the ____________ energy of the water molecules increases. 

1. Thermal

2. Kinetic


400

What happens when you remove thermal energy from an object?

Kinetic and potential energy decrease. The object gets colder. 

400

"the energy and object has due to its motion"

kinetic energy

400

When gas changes to a liquid, what is the process called? Is thermal energy added or removed?

Condensation


Removed

400

Once a substance melts, the average ____________ energy of its particles begins to increase again as more ____________ energy is added. 

1. Kinetic

2. Thermal

500

What is the difference between thermal energy and temperature?

Thermal energy is the total kinetic and potential energy of an object. Temperature is the average kinetic energy of an object.

500

"measure of the average kinetic energy of all the particles in an object"

temperature

500

When gas changes to a solid without changing to liquid first what is it called? Is thermal energy added or removed?

Deposition


Removed

500

When thermal energy is removed from water vapor, it ___________________ at 100 degrees Celsius, and the liquid water _______________ at 0 degrees Celsius. 

1. Condenses

2. Freezes