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Question Question 12
State the effect of the following on the surroundings:
(a) an endothermic reaction
(b) an exothermic reaction
(a) An endothermic reaction causes fall in temperature. These reactions absorb heat from the surroundings leading to cooling effect of the surroundings.
(b) An exothermic reaction causes rise in temperature. These reactions release heat into surroundings leading to increase in temperature of the surroundings.