| A | B |
|---|
| dense | something which is heavy for its volume |
| flow | move |
| gas | something that does not have a fixed shape or volume, and 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; soild, liquid or gas |
| data | results of an experiment |
| observation | what you see happening in an experiment |
| prediction | what you think will happen in an experiment |
| theory | an idea about why things work in the way they do |
| bonds | forces holding particles together |
| particles | the tiny pieces that everything is made out of |
| vibrate | move backwards and forwards |
| diffusion | when particles mix with each other without anything moving them |
| pressure | the force caused by particles hitting a certain area |
| vacuum | a completely empty space |
