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Chemical Reactions
Term | Definition |
---|---|
Chemical reaction | The process by which one or more different substances |
precipitate | A solid that is produce as a result of a chemical reaction in soultion |
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 how the relationship between the reactants and the product |
Reactant | Substance or molecule that participates in a chemical reaction |
product | A 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 substance combine to form a new compound |
Decomposition reaction | A reaction in which a single compound breaks down to form two or more simpler subtances |
Single displacement reaction | A reaction in which one element takes the place of another element in a compound |
Double displacement reaction | A reaction in which a gas, solid precipitate or molecular compound forms from the exchange of ions between two compounds |
Exothermic reaction | A chemical reaction in which heat is released to the surroundings |
Endothermic reaction | A chemical reaction that requires heat |
Law of conservaton | 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 |