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Chapter 7 Vocabulary: Types of Chem Rxns

Activity Series of Metals A table listing metals in order of decreasing activity. (7.8)
Coefficient A small whole number that appears in front of formula in a balanced chemical equation. (7.4)
Decomposition Reaction A chemical change in which a single compound is broken down into two or more simpler products. (7.7)
Skeleton Equation A chemical equation that DOES NOT indicate the relative amounts of reactants and products. (7.2)
Balanced Equation A chemical equation in which mass is conserved; each side of the equation has the same number of atoms of each element. (7.4)
Combination Reaction (Synthesis Reaction) A chemical change in which two or more substances react to form a single new substance. (7.6)
Double-Replacement Reaction A chemical change that involves an exchange of positive ions between two compounds. (7.9)
Spectator Ion An ion that does not change oxidation number or compositon during a reaction. (7.12)
Catalyst A substance that speeds up a reaction without being used up. (7.2)
Combustion Reaction A chemical change in which oxygen (O2) reacts with another substance, often producing energy in the form of heat and light. (7.10)
Net Ionic Equation An equation for a reaction in solution showing only those particles that are directly involved in the chemical change. (7.12)
Diatomic Molecule Contain two atoms of the same element.(page 114)
Chemical Equation An expression representing a chemical reaction; the formulas of the reactants (on the left) are connected by an arrow (--->) with the formulas for the products (on the right) (7.2)
Complete Ionic Equation An equation for a reaction in solution showing all strong electrolytes as ions (7.12)
Single-Replacement Reaction A chemical change in which atoms of an element replace atoms of a second element in a compound; also called a displacement reaction. (7.8)
Precipitate The formation of a solid in a solution in a chemical reaction.
Created by: KellyBeck