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P+C Changes
Physical and Chemical Changes 7th Grade
| Term | Definition |
|---|---|
| Physical Property | a characteristic that can be observed without changing the substance |
| Density | the amount of mass in a given volume |
| Solubility | the ability of a substance to dissolve in another substance |
| Boiling Point | the temperature at which a liquid changes to a gas |
| Conductivity | the ability to transfer heat or electricity |
| Malleability | the ability to be hammered or rolled into sheets |
| Ductility | the ability to be pulled into wires |
| Luster | how shiny a substance appears |
| Melting Point | the temperature at which a solid changes to a liquid |
| Chemical Property | a characteristic that describes how a substance reacts with others |
| Flammability | the ability to burn in the presence of oxygen |
| Reactivity | the ability to combine with or change into other substances |
| Physical Change | a change in form or appearance that does not create a new substance |
| Phase Change | when matter changes from one state (solid, liquid, gas) to another |
| Mixture | a combination of substances that are not chemically combined |
| Chemical Change | a change that produces one or more new substances |
| Precipitate | a solid that forms from a solution during a chemical reaction |
| Gas Production | bubbling or fizzing that shows a chemical reaction |
| Color Change | evidence of a chemical reaction when a new substance forms |
| Temperature Change | energy released or absorbed during a chemical reaction |
| Law of Conservation of Mass | matter is not created or destroyed in a chemical reaction |