| Question | Answer |
| Matter | Anything that has mass and takes up space. |
| Mass | A measure of how much matter there is in an object. |
| Volume | The amount of space an object takes up. |
| Energy | The ability to cause change. |
| Physical Properties | A characteristic of matter that can be detected or measured with the senses. |
| Chemical Properties | A description of how a kind of matter can change into other kinds of matter. |
| Solid | Matter that has a definite volume. |
| Liquid | Matter that has a definite volume but no definite shape. |
| Gas | Matter that does not have a definite shape or volume. |
| Element | A basic kind of matter made up of just one kind of atom. |
| Atom | The smallest particle of an element that has the properties of that element. |
| Nucleus | The cell structure that controls all of a cell's activities. The central part of an atom, made up of protons and neutrons. |
| Chemical Symbol | A shorthand way of how a kind of atom can chande into other kinds of matter. |
| Compound | A substance made up of two or more elements that are chemically joined or linked. |
| Chemical Formula | A group of symbols that shows the elements that make up a compound. |
| Mixture | Matter made up oftwo or more substances. |
| Solution | A mixture in which the different particles of matter are spread evenly. |
| Alloy | A solution of two or more metals, which has properties of its own. |
