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| Activity Series | The reactivity series or activity series is an empirical series of metals, in order of "reactivity”,  |
| Chemical Equation | A representation of a chemical reaction using symbols of the elements to indicate the amount of substance, usually in moles, of each reactant and product,  |
| Precipitate | To separate (a substance) in solid form from a solution,  |
| Coefficient | A number that is constant for a given substance, body, or process under certain specified conditions,  |
| Word Equation | An equation representing a reaction where the names of all the substances are used.,  |
| Formula Equation | A representation of a chemical reaction, usually written as a linear array in which the symbols and quantities of the reactants are separated from those of the products by an equal sign, an arrow, or a set of opposing arrows,  |
| Reversible Reaction | A reaction that, depending on ambient conditions, can proceed in either of two directions,  |
| Synthesis Reaction | Chemical reaction in which two or more reactants combine to form a single product,  |
| Decomposition Reaction | Separation of a substance into two or more substances that may differ from each other and from the original substance,  |
| Electrolysis | The passage of an electric current through an electrolyte with subsequent migration of positively and negatively charged ions to the negative and positive electrodes.,  |
| Single-Displacement Reaction | A chemical reaction in which an element replaces one element in a compound.,  |
| Double-Displacement Reaction | Molecular process involving the exchange of bonds between the two reacting chemical species, which results in the creation of products with similar or identical bonding affiliations.,  |
| Combustion Reaction | Sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of chemical species.,  |
