Are these liquids?
they take the shape of their container; they pour to make a flat surface.
But some materials behave very strangely. Some materials behave like liquids.
Some are mixtures of materials - liquid in a liquid, a liquid in a gas,
a solid in a gas, a solid in a liquid - even a liquid in a solid!
List all the liquids you can think of and try to group them by type. Decide your own group names and be prepared to explain the reasons for the groups.