Year 7 Chemistry

In a solid, the particles

• vibrate in place
• slide past one another
• overcome the strong attraction

Melting

• liquid to solid
• solid to liquid
• solid to gas
• gas to liquid

The drops of water that appear on the outside of a glass of cold juice on a warm day are an example of?

• sublimation
• condensation
• evaporation

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Which of the following occurs when a liquid becomes a gas?

• the particles slow down
• the particles beak away from one another
• the particles move closer together

What term describes a solid changing to a liquid?

• Deposition
• Sublimation
• Freezing 
• Melting

What term describes a liquid changing to a gas?

• Deposition
• Sublimation
• Freezing
• Evaporation

What term describes a solid changing to a gas?

• Deposition
• Sublimation
• Evaporation
• Freezing

A pure substance containing only one kind of atom.

• element
• mixture
• compound