matter Part 1 24.25

When the temperature of matter increases the particles...

• speed up and move closer
• speed up and move farther apart
• slow down and move closer together
• slow down and move farther apart

A change in the size, shape, or state of matter.

• chemical change
• physical change
• chemical reaction
• electron change

One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?

• evaporation; chemical change
• condensation; physical change 
• evaporation; physical change
• condensation; chemical change

Dissolving sugar in water is an example of a 

• physical change
• chemical change

Which is an example of a chemical reaction?

• paper cut into small pieces
• chocolate melting in a pan
• flour and sugar mixed in a bowl
• cookies baking in an oven

Gases are described as having a 

• definite shape and indefinite volume
• indefinite shape and indefinite volume
• definite shape and definite volume
• indefinite shape and definite volume

What has to happen in order for a phase change to occur?

• take away heat
• add heat
• either add or take away heat

Particles (molecules) in a ______________________ have more energy than the other states of matter.

• gas
• solid
• liquid

The speed of the molecules determines the _____.

• volume
• density
• pressure
• temperature

What is condensation?

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