expands the most on heating and expands the least. (2024)

1. Every substance expands on heating.
2. In solids, the intermolecular force is the strongest. Therefore the shape and volume of solids are fixed.
3. When solids are heated, they expand in all directions.
4. But the expansion in solid is least due to the least space between the molecules.
5. In liquids, due to the loosely packed structure of molecules, expand more than solids on heating.
6. In gases, the intermolecular force is negligible therefore they have a lot of space between their molecules.
7. Gases expand the most on heating due to the least intermolecular force between their molecules.

Thus, the gas expands the most on heating and solid expands the least.