Thermal Energy, Heat, States of Matter, Phase Changes

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

What happens to particles when they are heated?

Back

When particles are heated, they gain energy and move faster.

Front

What is heat?

Back

Heat is the transfer of thermal energy from one object to another due to a temperature difference.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What is a phase change?

Back

A phase change is the transformation of a substance from one state of matter to another.

Front

What occurs during melting?

Back

During melting, a solid absorbs heat and changes into a liquid.

Front

What occurs during freezing?

Back

During freezing, a liquid loses heat and changes into a solid.

Front

What is the boiling point of water?

Back

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.

Front

What is condensation?

Back

Condensation is the process where water vapor cools and changes back into liquid water.

Front

What is evaporation?

Back

Evaporation is the process where liquid water gains energy and changes into water vapor.