What is the reverse of endothermic?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

What is the reverse of endothermic?

Explanation:
Endothermic means a process that absorbs heat from the surroundings. The reverse of that is a process that releases heat to the surroundings, which is exothermic. For example, melting ice is endothermic because it absorbs heat, while freezing water is exothermic because it releases heat. Isothermal describes keeping the temperature constant and doesn’t specify heat flow direction, and spontaneous refers to whether a process happens without external influence, not the heat transfer direction. So the best answer is exothermic.

Endothermic means a process that absorbs heat from the surroundings. The reverse of that is a process that releases heat to the surroundings, which is exothermic. For example, melting ice is endothermic because it absorbs heat, while freezing water is exothermic because it releases heat. Isothermal describes keeping the temperature constant and doesn’t specify heat flow direction, and spontaneous refers to whether a process happens without external influence, not the heat transfer direction. So the best answer is exothermic.

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