The energy change when a reaction absorbs heat from the surroundings is described as what?

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Multiple Choice

The energy change when a reaction absorbs heat from the surroundings is described as what?

Explanation:
Endothermic processes involve a system gaining energy by taking in heat from the surroundings. When a reaction absorbs heat, energy flows into the reacting substances, so the reaction is described as endothermic. The surroundings may feel cooler because heat is leaving them to the reaction. For example, melting ice or photosynthesis are endothermic. In contrast, an exothermic reaction releases heat to the surroundings, not absorbs it. Acids and bases are substances, not descriptions of heat flow. So absorbing heat is best described as an endothermic reaction.

Endothermic processes involve a system gaining energy by taking in heat from the surroundings. When a reaction absorbs heat, energy flows into the reacting substances, so the reaction is described as endothermic. The surroundings may feel cooler because heat is leaving them to the reaction. For example, melting ice or photosynthesis are endothermic. In contrast, an exothermic reaction releases heat to the surroundings, not absorbs it. Acids and bases are substances, not descriptions of heat flow. So absorbing heat is best described as an endothermic reaction.

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