Reactants - Left side of an equation, Products - Right side of an equation, Law of Conservation - Equal atoms on both sides of an equation, Coefficient - Increases the number of molecules, Subscript - tells the number of atoms, Catalyst - Speeds up a reaction, inhibitor - Slows down a reaction, Exothermic - Reaction that gives off heat, Endothermic - Reaction that requires heat, Physical Property - Describes, Physical Change - melting, and cutting, Chemical Change - Produces New substance, Precipitate - "leftover" after the reaction, Evidence of C. Reaction - color change, heat released, bubbles, covalent bond - share electrons, Ionic bond - transfer of electrons, smallest part of compound - molecule,

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