Question

Take pieces of wax in a bowl and heat them on a candle or spirit lamp.

1. How do the pieces of wax change?
2. What was the initial state of wax?
3. What did it get converted into?

Now keep the same bowl in cold water. What happens?

Answer 1

1. When heated, the pieces of wax melt and change from solid to liquid.
2. The initial state of wax was solid.
3. On heating, the solid wax was converted into liquid wax.

When the bowl is kept in cold water, the liquid wax cools and changes back into solid wax. This process is called solidification.