Multiple choice

Which of the following is an example of an exothermic reaction?

  1. melting solid salts

  2. evaporating liquid water

  3. melting ice cubes

  4. combustion

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Combustion is a classic example of an exothermic reaction where fuel reacts with oxygen to release significant amounts of heat and light.