Compare the thermal expansion in solids, liquids and gases and explain the differences with reason.

Open in App

Solution

The comparison of thermal expansion in solids, liquids, and gases are:
Solid Liquid Gases
1. When a solid is heated, its atoms vibrate faster about their fixed points. 1. Liquids expand for the same reason, but because the bonds between separate molecules are usually less tight they expand more than solids. 1. Molecules within gases are further apart and weakly attracted to each other.
2. The relative increase in the size of solids when heated is therefore small. 2. This is the principle behind liquid-in-glass thermometers. 2. Heat causes the molecules to move faster, which means that the volume of a gas increases more than the volume of a solid or liquid.
3. Metal railway tracks have small gaps so that when the sun heats them, the tracks expand into these gaps and don’t buckle. 3. An increase in temperature results in the expansion of the liquid which means it rises up the glass. 3. Gases that are contained in a fixed volume cannot expand and so increases in temperature result in increases in pressure.

Suggest Corrections

Similar questions

Compare thermal expansion in solid, liquid and gases.

Differentiate between thermal expansion in solids and gases.

Compare in tabular form , the properties of Solids, Liquids and Gases with respect to :

Volume

47. Compare the properties of solids, liquids and gases in tabular form.

Join BYJU'S Learning Program

Solid	Liquid	Gases
1. When a solid is heated, its atoms vibrate faster about their fixed points.	1. Liquids expand for the same reason, but because the bonds between separate molecules are usually less tight they expand more than solids.	1. Molecules within gases are further apart and weakly attracted to each other.
2. The relative increase in the size of solids when heated is therefore small.	2. This is the principle behind liquid-in-glass thermometers.	2. Heat causes the molecules to move faster, which means that the volume of a gas increases more than the volume of a solid or liquid.
3. Metal railway tracks have small gaps so that when the sun heats them, the tracks expand into these gaps and don’t buckle.	3. An increase in temperature results in the expansion of the liquid which means it rises up the glass.	3. Gases that are contained in a fixed volume cannot expand and so increases in temperature result in increases in pressure.