Question Detail
Question
What happens to the particles of a solid when it is heated and begins to melt?
Correct Answer
Option A is the correct answer.
Detailed Explanation
When a solid is heated, particles gain kinetic energy and vibrate more strongly. As the temperature increases, the attractive forces weaken in comparison to the particle energy, and eventually the particles become free to move around, resulting in melting.
Hint
Heating increases particle motion until forces are overcome.