Question

Answer the following:

1. Why does ice float on water?

2. Why do solids have a definite shape?

3. How are gases liquefied?

Answer 1

1. Ice floats on water because density of ice is less than that of water.

2. The particles that make up a solid are packed very closely together. In addition, each particle is tightly fixed at one position. This fixed, closely−packed arrangement of particles causes a solid to have a definite shape.

3. When gases are operated under very high pressure and at extremely low temperatures, they get liquefied.