← Chemistry (0620)
Q1 / 5
Exothermic & endothermic reactions
Foundation
2 marks
Explain why hand warmers are an example of an exothermic reaction.
A
Iron in hand warmers oxidises exothermically, releasing heat to warm the hand
B
Hand warmers cool hands — they are endothermic
C
Hand warmers work by electrolysis, which is exothermic
D
Hand warmers absorb cold from the surroundings
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