click below
click below
Normal Size Small Size show me how
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 |