Which sequence is exothermic?

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Multiple Choice

Which sequence is exothermic?

Explanation:
Exothermic changes release heat to the surroundings. Gas to liquid is condensation, which releases latent heat as the molecules slow and cling together. Liquid to solid is freezing, which also releases latent heat as the substance forms a rigid structure. Since both steps release heat, the overall path from gas to liquid to solid is exothermic.

Exothermic changes release heat to the surroundings. Gas to liquid is condensation, which releases latent heat as the molecules slow and cling together. Liquid to solid is freezing, which also releases latent heat as the substance forms a rigid structure. Since both steps release heat, the overall path from gas to liquid to solid is exothermic.

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