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Ch 10 Sect 2 Gr 7
Chemistry terms
| Question | Answer |
|---|---|
| chemical equation | the representation that uses symbols, subscripts, coefficients and formula to show what happens in a chemical reaction |
| symbol | the one or two letter abbreviation for an element |
| chemical formula | abbreviation of a compound's name; includes symbols and subscripts |
| subscript | the number to the right and below a symbol to indicate the number of atoms present |
| reactants | the substance(s)that are present at the beginning of a chemical reaction; placed on the left side of a chemical equation |
| products | the substance(s) that are at the conclusion of a chemical reaction; placed on the right side of a chemical equation |
| conservation of mass | the scientific law that states that mass cannot be created or destroyed in ordinary chemical and physical changes |
| coefficient | the number written in front of a chemical formula; shows the number of molecules present |
| synthesis | type of chemical reaction in which 2 or more reactants produce one product |
| decomposition | type of chemical reaction in which one reactant breaks down into 2 or more products |
| replacement | type of chemical reaction in which one element replaces another element in a compound or in which 2 elements in different compounds trade place |
Created by:
Sciteach6