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EOG Chemistry
science vocabulary for EOG
| Term | Definition |
|---|---|
| element | pure substance that cannot be changed into simpler substances |
| compound | pure substance made of two or more types of elements that are chemically combined |
| molecule | smallest particle of a compound |
| atom | smallest particle of a element |
| mixture | combination of two or more substances that retain their own physical properties and can be seperated |
| valence | outer level electrons |
| physical properties | can be observed or measured without changing the matter studied |
| density | property that describes the relationship between mass of a material and its volume |
| solubility | ability to dissolve in a substance |
| ductility | property of metals that allow them to be drawn into a wire |
| malleability | property of metals that allow them to be hammered into flat sheets |
| physical change | change in one or more physical properties |
| chemical change | results in the formation of one or more new substances with new chemical and physical properties |
| preciptate | solid formed during a chemical reaction |
| pH | measure of how acidic or basic a substance is |
| specific heat | amount of energy needed to raise 1kg of a substance by 1 degree Celsius |