Understanding States of Matter

The three main states of matter are __________, __________, and __________.

• Solid, Liquid, Gas

• Solid, Liquid, Plasma

• Liquid, Gas, Plasma

• Solid, Gas, Plasma

In a gas, particles are __________ and move __________.

• Close together, slowly

• Far apart, quickly

• Close together, quickly

• Far apart, slowly

A liquid takes the shape of __________ but has a fixed __________.

• Its container, volume

• Its container, shape

• Its volume, shape

• Its shape, volume

When a solid changes into a liquid, the process is called __________.

• Freezing

• Condensation

• Melting

• Evaporation

The change from a liquid to a gas is called __________.

• Freezing

• Condensation

• Melting

• Evaporation

When a gas turns into a liquid, it undergoes __________.

• Freezing

• Condensation

• Melting

• Evaporation

The direct change from a solid to a gas is called __________.

• Freezing

• Condensation

• Sublimation

• Evaporation

The temperature at which a liquid turns into a solid is called its __________.

• Boiling point

• Melting point

• Freezing point

• Evaporation point

Heat energy causes particles to __________ and move __________.

• Expand, slowly

• Contract, quickly

• Expand, quickly

• Contract, slowly

A real-life example of condensation is __________.

• Ice melting

• Water boiling

• Dew forming on grass

• Snow falling