Phases, Formulas, Properties, and Changes

In a liquid...

• Particles are packed tightly together.

• Particles have a definite shape and volume.

• Particles have a no definite shape, but have a definite volume.

• Particles fly in all different directions.

The Law of Conservation of Mass states that...

• For every action, there is an opposite and equal reaction.

• An object in motion will remain in motion unless acted on by an outside force.

• The volume of an object is always equal to the mass of an object.

• Matter cannot be created nor destroyed, it can only change forms.

In the process of melting, a substance goes from...

• A solid to a liquid.

• A liquid to a solid.

• A gas to a liquid.

• A liquid to a gas.

A phase change from a liquid to a solid is called...

• Melting

• Boiling

• Condensing

• Freezing

In the table above, which compound would melt FIRST?

• Iodine

• Methane

• Sodium carbonate

• Water

We measure the boiling point of a substance by using...

• Mass

• Volume

• Density

• Temperature

Frozen carbon dioxide (also known as dry ice) changes phase directly from a solid to a gas. This is known as...

• Evaporation

• Condensation

• Vaporization

• Sublimation

The state of matter that has particles close together and vibrating.

• liquid

• solid

• gas

• water

The state of matter where particles are very spread out and moving quickly.

• gas

• liquid

• solid

• Helium

The phase change when a liquid becomes a gas.

• melting

• boiling

• sublimation

• evaporation