Question

With the help of a simple experiment show that different liquids expand by different amount for the same rise in temperature. (Explain the experiment)

Answer 1

Answer:

All three states of matter (solid, liquid and gas) expand when heated.

When a solid is heated, its atoms vibrate faster about their fixed points. The relative increase in the size of solids when heated is therefore small.

Liquids expand for the same reason, but because the bonds between separate molecules are usually less tight they expand more than solids.

Molecules within gases are further apart and weakly attracted to each other. Heat causes the molecules to move faster, (heat energy is converted to kinetic energy) which means that the volume of a gas increases more than the volume of a solid or liquid. However, gases that are contained in a fixed volume cannot expand - and so increases in temperature result in increases in pressure.

example is a mercury thermometer and a alcohol thermometer

alcohol expands much more than mercury for the same increase in temperature

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