Phase Change

When a substance melts, the kinetic energy _____________.

• decreases

• stays the same

• increases

• decreases then increases

The molecules in this picture are in what phase?

• solid

• liquid

• gas

• plasma

If this substance had kinetic energy ADDED, it would be in what phase?

• solid

• liquid

• gas

• plasma

What is the energy that an object has because it is moving?

• kinetic

• potential

• electric

• wind

What takes place when a liquid changes to a gas?

• condensation

• melting

• evaporation

• freezing

What takes place when a solid changes to a liquid?

• condensation

• melting

• evaporation

• freezing

What is the average kinetic energy of a substance called?

• volume

• temperature

• pressure

• movement

What takes place when a liquid changes to a solid?

• condensation

• melting

• evaporation

• freezing

What takes place when a gas changes to a liquid?

• melting

• freezing

• evaporation

• condensation

What takes place when a solid changes to a liquid?

• condensation

• freezing

• melting

• evaporation