| A | B |
|---|
| chemical properties | A characteristic of a substance that can only be seen when the substance changes and a new substance is formed; describes how matter reacts with other matter. |
| physical properties | A characteristic of a material or object that can be seen or measured without changing the material into a new substance. |
| property | A characteristic that describes matter. |
| matter | Anything that has mass and takes up space. |
| mass | The amount of matter that something contains. |
| Physical change | change in appearance, but not subtance |
| Chemical change | changing to a new substance |
| Atom | smallest whole bit of a substance |
| Nucleus | Center of an atom |
| Electron | Negatively charged particle |
| Proton | Positively charged particle |
| Neutron | A particle with no charge |
| atomic mass | the total mass of the protons and neutrons, which is found by adding the protons and neutrons together |
| periodic table of elements | a chart in which elements with similar charteristics are grouped together |
| solid | matter with tightly packed (dense) molecules |
| liquid | matter with loosely packed molecules |
| gas | matter with very loosely packed molecules |
| element | an element is made up of only ONE kind of atom |
| compound | a substance made of two or more elements that are CHEMICALLY COMBINED |
| molecule | smallest particle of two or more elements chemically combined |
| mixture | mixing 2 or things together |
| suspension | mixture in which one part is liquid and some parts do not dissolve |
| solution | a mixture in which the composition is the same throughout. It dissolves. |
| condensation | when air is cooled and turned into a liquid |
| evaprotion | when a liquid is heated and turns to gas |
