What describes an endothermic reaction?

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Study for the Georgia High School Physical Science Test. Prepare with flashcards and multiple-choice questions, detailed hints and explanations included. Get ready for your exam!

Multiple Choice

What describes an endothermic reaction?

Explanation:
Endothermic reactions take in energy from their surroundings. Because heat flows into the reaction, the surroundings cool down, so the system feels cold to the touch. This energy absorption is the hallmark of endothermic processes, distinguishing them from exothermic ones, which release energy and feel warm. Producing gas or changing color can happen in many reactions and don't define whether a reaction is endothermic or exothermic; what matters is the direction of energy flow. So the idea that an endothermic process absorbs energy and feels cold best describes what’s happening.

Endothermic reactions take in energy from their surroundings. Because heat flows into the reaction, the surroundings cool down, so the system feels cold to the touch. This energy absorption is the hallmark of endothermic processes, distinguishing them from exothermic ones, which release energy and feel warm.

Producing gas or changing color can happen in many reactions and don't define whether a reaction is endothermic or exothermic; what matters is the direction of energy flow. So the idea that an endothermic process absorbs energy and feels cold best describes what’s happening.

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