Which of the following is absorbed during an endothermic reaction?

• A. Heat energy
• B. Light energy
• C. Electrical energy
• D. Sound energy

Answer: (A)

Verified step by step guidance

1. Understand the definition of an endothermic reaction: it is a chemical reaction that absorbs energy from its surroundings, usually in the form of heat.
2. Recall that energy can be absorbed in different forms such as heat, light, electrical, or sound energy, but in chemistry, the most common form absorbed in endothermic reactions is heat energy.
3. Analyze the options given: heat energy, light energy, electrical energy, and sound energy, and consider which is typically absorbed to drive the reaction forward.
4. Recognize that heat energy is the form of energy absorbed during an endothermic reaction because the system requires energy input to break bonds or cause changes.
5. Conclude that the correct answer is heat energy, as it is the energy absorbed during an endothermic process.