| A | B |
|---|
| dense | something which is heavy for its volume |
| flow | move |
| gas | something that does not have a fixed shape or volume, and is easy to squash |
| liquid | something with a fixed volume but no fixed shape |
| property | a description of how a material behaves and what it is like |
| solid | something with a fixed shape and volume |
| states of matter | there are three different forms which a substance can be in; solid, liquid or gas |
| bonds | forces holding particles together |
| particles | the tiny pieces that everything is made out of |
| vibrate | move backwards and forwards |
| degrees Celsius | the units for measuring temperature |
| contract | get smaller |
| expand | get bigger |
| fluid | a gas or a liquid |
| boiling point | when a liquid is at its boiling point it is as hot as it can get |
| condense | when a gas turns into a liquid |
| evaporate | when a liquid turns into a gas |
| heat energy | the hotter something is, the more heat energy it has |
| melt | when a solid turns into a liquid |
