Question

1. Name the phenomenon which causes the following changes :

(c) Conversion of ice into water.

Answer 1

Melting or fusion:

• The process by which a solid substance changes from a solid-state to a liquid state is called melting or fusion.
• This process occurs a solid substance like ice is heated, due to heating the particles of solid gain energy and start vibrating with greater speed.
• As a result when particles gain enough energy, they overcome the force of attraction and hence they start moving.
• Ultimately a solid changes into a liquid( water).

Concluding statement: The process by which a solid substance changes from a solid-state to a liquid state is called melting or fusion ( conversion of ice to water).