States, Energy, Particles, and Heat Transfer

Solids, liquids, and gases are states of matter.

• True

• False

What is true about a solid? (You can check more than one!)

• It can change shape.

• It can change volume.

• It can't change shape.

• It can't change volume.

What is true about a liquid? (You can check more than one!)

• It can change shape.

• It can change volume.

• It can't change shape.

• It can't change volume.

What is true about a gas? (You can check more than one!)

• It can change shape.

• It can change volume.

• It can't change shape.

• It can't change volume.

How are gases different from liquids? (Try to use the words volume and shape.)

What causes a solid to change into a liquid?

• Magic

• adding thermal energy

• taking away thermal energy

What is thermal energy?

What is it called when thermal energy is added to a solid and it turns into a liquid?

• melting

• evaporation

• condensation

• freezing

What is it called when thermal energy is removed from a gas and it turns into a liquid?

• melting

• evaporation

• condensation

• freezing

What is it called when thermal energy is removed from a liquid and it turns into a solid?

• melting

• evaporation

• condensation

• freezing