Which substance contains particles with the most energy?

• iron

• water

• oxygen

In which state of matter are particles packed tightly together in fixed positions?

• gas

• solid

• liquid

• compound

Particles which make up matter are always moving.

• TRUE

• FALSE

Matter is anything that has ______________ and _______________.

• mass and shape

• mass and volume

• particles and shape

• energy and volume

Matter changing from a solid to a liquid is called

• evaporation

• boiling

• freezing

• melting

In which state of matter do particles spread apart and fill all the space available to them?

• solid

• liquid

• gas

• ice

During the process of sublimation

• a liquid turns into a gas

• a liquid turns directly into a solid

• a solid turns into a liquid

• a solid turns directly into a gas

Which of the following is a TRUE statement?

• Particles in a liquid are further apart than in a solid.

• Particles in gases are closer together than in liquids.

• Particles in solids are further apart than in liquids

• Particles in solids, liquids and gases are all the same distance apart.

What would cause a liquid to turn into a solid?

• pouring it in to a container.

• heating it until it boils.

• cooling it until it freezes.

• keeping it at a constant temperature.

Condensation is a process through which a gas becomes

• solid

• liquid

• gas

• plasma