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Stack #693671
| Question | Answer |
|---|---|
| chemical reaction | a process that chnages (or transforms) one set of chemicals into another. |
| reactants | are the elements or compunds that enter a chemical reaction |
| products | are the elemnts or compunds that are produced by a chemicalo reaction |
| if the reactants have more enery than the products, then energy is released it is also known as what? | exothermic reaction |
| if the reactants have less energy than the products ,then the energy is absorbed is also known as what? | endothermic reaction |
| activation energy | is the energy neeaded to get a chemical reaction started |
| a chemical reaction that releases energy... | often occur spontanously |
| chemical reactions that absorb energy... | will not occur without a source of energy |
| cataylst | a substance that speeds upt the rate of a chemical reaction |