Question

Why do liquids easily take the shape of containing vessel, but not the solids?

Answer 1

• Solids have highest inter-molecular forces of attraction due to which there is negligible inter-atomic movements. That's why, they have a definite shape and definite volume of their own. They do not require any vessel to contain them.
• Liquids can flow as they have less intermolecular force of attraction in comparison with solids. Due to this, there is relatively more intermolecular spaces and layers of liquid molecules can slide over one another showing moderate fluidity. Hence, they tend to take up the shape to the vessel containing them.

Therefore, liquids can easily take the shape of the container in which they are poured but solids cannot.