| A | B |
|---|
| solids | have definite shape and volume |
| liquids | have volume but no definite shape |
| gases | haveno definite shape or volume |
| matter | all objects are made from this |
| physical properties | observable characteristics that make objects different from each other |
| mass | the amount of space matter takes up |
| volume | the amount of matter present |
| atoms | tiny particles that make up all matter |
| states of matter | solid, liquid, gas |
| melting | the process of using heat to turn a solid into a liquid |
| freezing | the process of removing heat to turn a liquid into a solid |
| evaporation | the process of using heat to turn a liquid to a gas |
| condensation | the process of removing heat to turn a gas into a liquid |
