| A | B |
|---|
| State of Matter | one of three forms that matter can take; solid, liquid or gas |
| Molecule | a particular that contains more than one atom joined together |
| Neutron | a particular in the nucleus of an atom that has a no net electric charge |
| Proton | A particular in the nucleus of an atom that carries one unit of positive electric charge |
| Element | A pure substance that cannot be broken down into any simplier substances |
| Electron | A particular in space outside the nuclues of an atom that carries on a unit of negative charge |
| Compound | Any substance that is made by the chemical combination of two or more elements and acts like a single substance |
| Atom | The smallest unit of an element that reains the properties of that element |
