Energy is absorbed:
Correct answer: D. Both A and B
- A. In bond breaking
- B. In endothermic reactions
- C. In bond formation
- D. Both A and B
Explanation
The correct answer is "Both A and B." Both bond breaking and endothermic reactions involve the absorption of energy from the surroundings. Bond breaking requires energy to break existing bonds, and endothermic reactions absorb energy to convert reactants into products with higher potential energy.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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