| A | B |
|---|
| solid | a state of matter that has a fixed shape and volume |
| liquid | a state of matter that has a fixed volume, but its shape changes to match the shape of its container |
| gas | a state of matter that does not have a fixed shape of volume |
| state | one of the three main forms of matter |
| physical change | a change in the appearance of matter without actually changing the matter itself |
| matter comes in | one of three different forms |
| a definite shape and volume | solid |
| water | an example of a liquid |
| air | a mixture of many different gases |
| as the temperature increases | a solid will change to a liquid and a liquid will change to a gas |
| when matter changes state it has gone through a | physical change |
| when a solid begins to change into a liquid it has | started to melt |
| when a liquid begins to change to a gas it has | started to boil |
