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PhysicalScienceCh14
Chapter 14 Vocabulary
Word | Definition |
---|---|
Reactant | A substance or molecule that participates in a chemical reaction. |
Decomposition Reaction | A reaction in which a single compound breaks down to form two or more simpler substances. |
Chemical Formula | A combination of chemical symbols and numbers to represent a substance. |
Product | The substance that forms in a chemical reaction |
Chemical Reaction | The process by which one or more substances change to produce one or more different substances. |
Chemical Equation | A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the product. |
Law of Conservation of Mass | The law that states that mass cannot be created or destroyed in ordinary physical and chemical changes. |
Synthesis Reaction | A reaction in which two or more substances combine to form a new compound. |
Precipitate | A solid that forms as a result of a chemical reaction in a solution. |
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 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 Conservation of Energy | The law that states that energy cannot be destroyed or created but can be changed from one form to another. |
Activation Energy | The minimum amount of energy needed to start a chemical reaction. |
Inhibitor | A chemical that slows down or stops a chemical reaction. |
Catalyst | A substance that changes the rate of a chemical reaction with out being used up or changed very much. |