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Ch.14 Science
Chemical Reaction
Question | Answer |
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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 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 participants 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 to the surroundings. |
Endothermic Reaction | A chemical reaction that requires heat. |
Law of conversation 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. |