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Vocab Unit 6
Term | Definition |
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Reactant | a substance or molecule that participates in a chemical reaction |
Product | a substance that forms in a chemical reaction |
Chemical Energy | the energy released when a chemical compound reacts to produce new compounds |
Exothermic Reaction | energy is released to the surroundings as heat |
Endothermic Reaction | requires energy input |
Chemical Equation | shows the relationship between the reactants and the products |
Synthesis Reaction | reaction in which two or more substances combine to form a new compound |
Decomposition Reaction | a reaction in which a single compound breaks down to form two or more simple substances |
Combustion Reaction | the oxidation reaction of an organic compound, in which heat is released |
Single-Displacement Reaction | a reaction in which one element or radical takes the place of another element or radical in a compound |
Double-Displacement Reaction | a reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds |
Free Radical | an atom or a group of atoms that has one unpaired electron |
Oxidation-Reduction Reaction, Redox Reaction | any chemical change in which one species is oxidized, or loses electrons, and another species is reduced, or gains electrons |
Catalyst | a substance that changes the rate of a chemical reaction without being consumed or changed significantly |
Enzyme | a molecule, either protein or RNA, that acts as a catalyst in biochemical reactions |
Substrate | the reactant in reactions catalyzed by enzymes |