8th Ch. 9 Vocab Review

a process in which atoms of one or more substances rearrange to form one or more new substances

a description of a reaction using element symbols and chemical formulas

the starting substances in a chemical reaction

the substances produced by the chemical reaction

states that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction

a number placed in front of an element symbol or chemical formula in an equation

a type of chemical reaction in which two or more substances combine and form one compound

when one compound breaks down and forms two or more substances

when one element replaces another element in a compound

when the negative ions in two compounds switch places, forming two new compounds