An endothermic reaction does what?

An endothermic reaction does what?

• A. Releases heat
• B. Absorbs heat
• C. Stops combustion
• D. Produces oxygen

Answer: (B)

An endothermic reaction absorbs heat from its surroundings, drawing energy into the system. Because heat is taken in, the surroundings often feel cooler. This energy input drives the chemical changes that occur. In contrast, releasing heat happens in exothermic reactions, not endothermic. Stopping combustion or producing oxygen aren’t defining features of endothermic processes, since endothermy specifically describes heat flow into the reaction.

An endothermic reaction absorbs heat from its surroundings, drawing energy into the system. Because heat is taken in, the surroundings often feel cooler. This energy input drives the chemical changes that occur. In contrast, releasing heat happens in exothermic reactions, not endothermic. Stopping combustion or producing oxygen aren’t defining features of endothermic processes, since endothermy specifically describes heat flow into the reaction.