chemistry 2 test words
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Created by:
risinger on November 23, 2010
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Classes:
Science, 2nd period, 1st period science, 5th period, 6th period, 2nd period science
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23 terms
Terms | Definitions |
|---|---|
 chemical change | change that gives you a new substance |
| physical change | changes where the substance's identity stays the same |
| reactant | on the left side of an equation, what you start with in a reaction |
| product | on the right side of an equation, what you end with in a reaction |
| subscript | small number tells the number of atoms |
| coefficient | large number tells the number of molecules |
| formula | tells the number an type of elements in a compound |
| symbol | stands for an element |
| boiling point | the temperature at which a substance changes from a liquid to a gas |
| melting point | temperature at which a substance changes from a solid to a liquid |
| density | comparison of mass to volume |
| rust | combination of oxygen and iron |
| law of conservation of mass | says matter can't be created or destroyed |
| equal | the mass of the reactants must _________the mass of the products |
| rearrange | matter may_________but the number of atoms must remain the same |
| precipitate | a solid created from 2 liquids in a chemical reaction |
| equation | short hand way of writing a chemical reaction |
| tarnish | metals turning colors |
| phase | changes in matter from solids, liquids, and gases. These are physical changes. |
| freezing point | the temperature at which liquids changes to solids |
| mixture | type of matter made with physical changes |
| compound | type of matter made with chemical changes |
| element | type of matter that can't be simplified |
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