Give reasons for the following.
(a) Liquids can be taken in an open container while gas requires a closed container.
(b) Honey cannot be poured into another container as easily as water
(c) Gases flow more than liquids.
(d) As water is subjected to heating, its temperature increases and becomes constant at `100^(@)C` even though water is still there in the container and the supply of heat is continued.
(e) When a solid substance is subjected to heating, it dissappears without leaving any liquid.

Explanation

(a) Liquids have on e free surface. As the upper surface is a free surface, it can be left open for the contaienr in which a liqudi is taken. Liquids occupy a fixed volume. Gases have no free surfaces at all. Therefore, a gas has to be taken in a container closed on all the sides.
(b) Honey is viscous liquid, and hence has lesser fluidity when compared to water.
(c) Gases hve negligible intermolecular forces of attraction while liquids have appreciable intermolecular forces of attraction. As a result, gaes can flow more than liquids.
(d) `100^(@)C` is the boiling point of pure water. Atthis temperature, water starts vaporzing into steam. Till the entire water in teh container gets converted to steam. the temperature remaisn constant at `100^(@)C`. The heat is utilized for breaking the intermolecular forces of attraction.
(e) Generally, a solid substance on heating melts and changes into liquid state, but, some solids, on heating, undergo sublimation and chagne into vapour state directly wihtout passing through intermediate liquids state. Threfore. such substances disappear on heating without leaving any liquid.