| A | B |
| matter | anything that has mass and takes up space |
| mass | a measure of how much matter an object contains |
| weight | the force of gravity on an object |
| volume | the amount of space that matter in an object takes up |
| atom | the smallest possible unit of matter |
| molecule | a group of atoms bonded together |
| element | a substance that consists of atoms of only one type |
| compound | a substance made up of two or more different types of atoms bonded together |
| mixture | a combination of different substances that remain the same individual substances and can be separated by physical means |
| states of matter | the different forms in which matter can exist:solid, liquid, gas |
| solid | matter that has a definite shape and volume |
| liquid | matter that has a definite volume but does not have a definite shape |
| gas | matter with no definite volume and no definite shape |