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chemicals
Term | Definition |
---|---|
chemical reaction | a process that produces chemical change. |
reactant | are the substance that exit before the reaction begins |
product | a substances that forms as a result of the reaction. |
chemical equation | tells chemist at a glance the reactants, products, physical state, and the proportions of each substance. |
endothermic reaction | absorbs heat energy |
exothermic reation | releases heat energy. |