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Chem CH1 Section 2
Chemistry CH1 Section 2 Properties and Changes of Matter
| Term | Definition |
|---|---|
| chemical change | the change of one or more substances into other substances |
| chemical property | a property that can be observed only when there is a change in the composition of a substance |
| chemical reaction | another term for chemical change |
| density | the amount of matter (mass) in a given unit volume |
| endothermic | chemical reaction that absorbs energy |
| energy | the capacity to do work |
| exothermic | chemical reaction that gives off energy |
| law of conservation of mass | in a chemical change, matter is neither created nor destroyed |
| volatile | description of a substance that easily changes to a gas at room temperature |