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Chemical Reactions
Question | Answer |
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Activation Energy | Amount of energy needed to start a chemical reaction |
Chemical Reactions | A process in which one or more substances change to produce one or more different substances. |
precipitate | A solid that is produced as a result of a 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 from the beginnning |
product | The substance that forms as a result of a chemical reaction |
Law of conservation of mass | The law that states that mass cannot be created or destroyed; it only changes form |
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 simper substance. |
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 new compounds form from the exchange of ions betweenfrom two initial compounds. |
exothermic reaction | A chemical reaction in which is released to 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. |
inhibitor | A substance that slows down or stops a chemical reaction. |
catalyst | A substance that changes the rate of a chemical raection without being used up or changed very much. |
Physical Changes | Changes that do not result in a change in the composition of a substance |
Chemical Changes | Changes that result in a change in the composition of a substance |