Question

Describe how a solid changes into a liquid on heating.

Answer 1

solid changes into a liquid

1. Heat energy causes the particles in a solid to vibrate more vigorously when it is heated.
2. At the melting point, the particles in a solid have enough energy to overcome the strong force of attraction that holds them in fixed places, causing the solid to break up into small groups of particles, generating a liquid.
3. The heat energy absorbed by ice is called the latent heat of fusion because it is stored in a concealed form.