Question

Give a simple example to show that solids expand on heating .

Answer 1

• Anything which occupy space and has mass is called as matter.
• Matter can exist in solid, liquid and gases.
• In solids the particles are arranged closer to each other.
• It has a definite shape and volume.
• The important characteristic of solids is that, it can expand on heating.
• When solids heated, the thermal energy of the particles present in it increases causing them to expand.
• The common example example to show that solids expand on heating is:
• Gaping between railway track is minimum in winter session while it is maximum in summer session which indicate that metals (solids) expand on summer (heating).