Multiple choice

Which statement about combustion reactions is incorrect?

  1. They involve oxygen

  2. They are exothermic

  3. They are endothermic

  4. They release energy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Combustion reactions are exothermic, meaning they release energy as heat and light. They are not endothermic, which would require the absorption of energy.

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