alleryAn exothermic reaction is one in which heat is:
AAbsorbed from surroundings
BNeither absorbed nor released
CReleased to surroundings
DStored in the bonds always
Answer & Solution
Correct answer: C. Released to surroundings
1. Exothermic: products have LOWER energy than reactants — extra energy is released as heat.
2. Combustion (CH₄ + 2 O₂ → CO₂ + 2 H₂O + heat) is a familiar example.
3. Endothermic reactions ABSORB heat (cooking food, photosynthesis).
_Source: syllabus Science Ch 1 §1.2.1 Combination Reactions_
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