click below
click below
Normal Size Small Size show me how
Ch. 14 vocab.vocab.
VOCABULARY
| Question | Answer |
|---|---|
| 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 reactions 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 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. |
| 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. |