Lesson: Chapter 8 — Heat changes in chemical reactions

Putting the chapter together 3 of 3 Reset answers

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Question 3

Which change is exothermic?

A Photosynthesis B Dissolving ammonium chloride in water C Heating limestone D Burning a candle

The right answer is the one marked above.

Burning a candle. Burning gives out heat and light; the other three absorb heat.

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