| A | B |
|---|
| matter | any object or substance that has mass and takes up space |
| particle model | the idea stating that all matter is made of tiny particles which are in constant motion |
| solid | matter having a definite shape and a definite volume |
| liquid | matter having a definite volume but not a definite shape(a fluid) |
| gas | matter having no definite shape and no definite volume |
| plasma | the fourth phase of matter having unique properties and formed at very high temperatures |
| physical change | a change in a substance's physical properties but not in its chemical identity |
| chemical change | change in the chemical identity of a substance |
| evidence of physical change | change in the size, shape, or phase of matter |
| evidence of chemical change | new kinds of particles created by producing heat or light, creating bubbles of gas, or forming a new solid |
