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What is a reactant?
A substance that undergoes a chemical change
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What is a product?
A substance that is a result of a chemical change
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What is chemical energy?
The energy stored within atoms
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What is a exothermic reaction?
A reaction that transfers energy from the reactants to the surroundings as heat
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What is a endothermic reaction?
A reaction in which energy is transferred to the reactants as heat from the surroundings
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