click below
click below
Normal Size Small Size show me how
chemical
| Question | Answer |
|---|---|
| chemical reaction | process that produces chemical change,resulting in new substances that have properties different from those in original substance . |
| reactant | substance that exist before a chemical reaction begins. |
| product | substance that forms as a result of a chemical reaction. |
| chemical equation | shorthand form of writing that reacts are used and what products are formed in a chemical reaction; sometimes shows whether energy is produced or absorbed. |
| endothermic reaction | chemical reaction in which heat energy is absorbed. |
| exothermic reaction | chemical reaction in which energy is released. |