During an exothermic chemical reaction,

A. a system becomes warmer, and the chemical substances undergo a decrease in potential energy.

B. a system becomes warmer, and the chemical substances undergo an increase in potential energy.

C. a system becomes cooler, and the chemical substances undergo a decrease in potential energy.

D. a system becomes cooler, and the chemical substances undergo an increase in potential energy.

E. a system becomes warmer, and additional heat is gained from the surroundings.

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Guest

14 July, 10:43

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Answers (1)

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Rosa Henson · Answer 1

B.

Explanation:

When an exothermic chemical reaction occurs the substance becomes warmer and it gains potential energy