activity series (p. 333) - lists metals in order of decreasing reactivity and a reactive metal will replace any metal listed below it in activity series

balanced equation (p. 325) - each side of the equation has the same number of atoms of each element and mass is conserved

catalyst (p. 323) - a substance that speeds up the reaction but is not used up in the reaction, neither a reactant nor a product, so its formula is written above the arrow

chemical equation (p. 323) - a representation of a chemical reaction; the formulas of the reactants (on left) are connected by an arrow with the formulas of the products (on right)

coefficients (p. 325) - small whole numbers that are placed in front of the formulas in an equation in order to balance it

combination reaction (p. 330) - a chemical change in which two or more substances react to form a single new substance

combustion reaction (p. 336) - a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light, always with the reactant oxygen and often hydrocarbon

complete ionic equation (p. 342) - an equation that shows dissolved ionic compounds as dissociated free ions

decomposition reaction (p. 332) - a chemical change in which a single compound breaks down into two or more simpler products

double-replacement reaction (p. 334) - a chemical change involving an exchange of positive ions between two compounds, aka double-displacement reactions, usually in aqueous solution and often produce precipitate (gas) or molecular compound like water

net ionic equation (p. 343) - an equation for a reaction in solution that shows only those particles that are directly involved in the chemical change

single-replacement reaction (p. 333) - a chemical change in which one element replaces a second element in a compound, note that both the reactants and the products consist of an element and a compound

skeleton equation (p. 323) - a chemical equation that does not indicate the relative amounts of the reactants and products

spectator ion (p. 343) - an ion that appears on both sides of an equation and is not directly involved in the reaction