| A | B |
|---|
| Matter | anything that has mass and takes up space |
| Substance | a single kind of matter that is pure. |
| Physical Property | a characteristic of a pure substance that can be observed without changing it into another substance |
| Chemical Property | a characteristic of a pure substance that describes its ability to change into different substances |
| Element | a pure substance that cannot be broken down into any other substances by chemical or physical means. |
| Atom | the basic particle from which all elements are made |
| Chemical Bond | a force of attraction between two atoms . |
| Molecules | Atoms that combined to form larger particles |
| Compound | a pure substance made up of two or more elements chemically combined in a set ratio |
| Chemical Formula | a representation of a compound which shows the elements in the compound and the ratio of the atoms |
| MIxture | Made of two or more substances- elements, compounds, or both that together in the same place but not chemically combined. |
| heterogeneous mixture | a mixture where you can see the different parts |
| Homogeneous mixture | a mixture that has the substances so evenly mixed that you can't see the different parts. |
| Solution | an example of a homogeneous mixture ( sugar water) |
| Physical Change | any change that alters the form or appearance of matter but does not make any substance in the matter into different substance |
| Chemical Change | a chemical reaction |
| Law of conservation of matter | matter is not created or destroyed in any chemical or physical change |
| temperature | a measure of the average energy of random motion of particles of matter |
| Thermal Energy | the total energy of all of the particales in an object |
| Endothermic Change | a change in which energy is taken in |
| Exothermic Change | a change in which energy is released |
| Chemical Energy | the energy stored in chemical bonds between atoms |
| Electromagnetic Energy | a form of energy that travels through space as waves |
| Electrical Energy | the energy of electrically charged particles moving from one place to another |
| Electrodes | metal strips |
