Question

why does a liquid take the shape of the container but not expand to completely fill the container

Answer 1

The particles in a liquid are not stuck in fixed positions, which is why liquids flow to take the shape of a container into which they are placed. However, the particles in a liquid are also close together, so they have a set volume and cannot expand beyond that.

Answer 2

Answer:

Liquid cannot expand because it can only take up space based on the quantity of the liquid. For example, half a glass of water cannot expand to completely fill the glass because there's only half a glass of water.

I hope this helps! :)