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Chemical Reactions
Chapter 2 Terms
Term | Definition |
---|---|
Chemical Reaction | the process by which one or more substances change to produce one or more different substances |
Precipitate | a solid that is produced as a result of chemical reaction in solution |
Chemical Formula | a combination of chemical symbols and numbers to represent a substance |
Chemical equation | a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products |
Reactant | a substance or molecule that participates in a chemical reaction. |
Product | the substance that forms in a chemical reaction |
Law of Conservation of Mass | the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes |
Synthesis Reaction | a 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 simpler substances |
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 exchange of ions between two compounds |
Exothermic Reaction | a chemical reaction in which heat is released in the surroundings |
Endothermic Reaction | a chemical reaction that requires heat |
Law of Conservation of Energy | the law that states that energy cannot be created or destroyed but can be changed from one form to another |
Activation Energy | the minimum amount of energy required to start a chemical reaction |
Inhibitor | a substance that slows down or stops a chemical reaction |
Catalyst | a substance that changes the rate of a chemical reaction without being used up or changed very much |