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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 |