Final answer:
Endothermic reactions absorb energy while exothermic reactions release energy.
Step-by-step explanation:
Endothermic and exothermic chemical reactions are two different types of reactions that involve energy changes. In an endothermic reaction, energy is absorbed from the surroundings, causing the surroundings to cool down. Examples of endothermic reactions include the reaction between baking soda and vinegar or the process of photosynthesis. On the other hand, in an exothermic reaction, energy is released to the surroundings, causing the surroundings to heat up. Examples of exothermic reactions include combustion reactions and the reaction between water and sodium hydroxide.
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