| A | B |
|---|
| volume | the amount of space an object takes up |
| mass | the measure of how much matter an object contains |
| matter | anything that takes up space and has mass |
| property | something about an object that can be observed such as size, shape, color, or sound |
| states of matter | the three forms of matter- solid, liquid and gas |
| atoms | a small particle that makes up matter |
| physical change | a change in the size, shape, state, or appearance of matter |
| evaporate | to change from a liquid state to a gas |
| water vapor | water in the form of gas |
| condense | to change from a gas to a liquid state |
| chemical change | a change that causes matter to become a new kind of matter |
| molecules | smallest and most basic particle in matter ( atoms) |
| expand | to make or become larger in size, volume, or amount |
| contract | to make or become smaller |
| temperature | a measurement of the speed at which particles of matter are moving |
| thermometer | tool for measuring temperature |
| the particles(atoms) of a solid are | close together and move back and forth very slowly. They keep their shape |
| the particles (atoms) of a liquid are | farther apart and move around each other. They take the shape of the container they are in |
| the particles (atoms) of a gas are | very far apart and are moving a great deal. They take the shape of the container they are in. |
| examples of physical change | cutting paper, folding paper, shaping clay, melting cheese |
| examples of chemical change | burning wood, tarnish, rust |
