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chemical
Question | Answer |
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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. |