| A | B |
|---|
| Physical change | A change in a substance that does not change its identity. |
| Chemical change | A change in which one or more substances combine or break apart to form new substances. |
| 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 a different substance. |
| Matter | Anything that has mass and takes up space (has volume). |
| Mass | The measure of how much matter is in an object. |
| Mixture | A material that has two or more substances that are not combined chemically. |
| Volume | The amount of space that an object takes up. |
| Density | The measurement of how much mass of a substance is contained in a given volume. |
| Compound | A substance that is formed when atoms of 2 or more materials combine chemically. |
| Element | A substance that can't be broken into simpler things by chemical means. |
| Law of conservation of matter | The total amount of matter is neither created nor destroyed during any physical or chemical change. |
| Reactants | The substances that combine chemically to make something new. |
| Products | The new substances created from a chemical reaction. |
| Endothermic | A reaction that causes the temperature of the new substance to decrease. |
| Exothermic | A reaction that causes the temperature of the new substance to increase. |
| Viscosity | How resistant a fluid is to flow. In a nonNewtonian fluid like Oobleck it can change. |
