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Chemistry Unit
Waite: Chemical reactions Ch 6
| Term | Definition |
|---|---|
| matter | Anything that has mass and takes up space |
| 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 |
| chemical change | A change in which one or more substances combine to break apart to form new substances. |
| physical change | A change in a substance that does not change its identity |
| reactant | A substance that undergoes change in chemical reaction |
| product | A substance formed as a result of a chemical reaction |
| precipitate | A solid that forms from a solution during a chemical reaction |
| endothermic reaction | A reaction that absorbs energy in the form of heat |
| exothermic reaction | A reaction that releases energy in the form of heat |
| Law of Conservation of Matter | The principle that the total amount of matter is neither created nor destroyed during any chemical or physical change |