Question

Give two resons to justify that :

(a) Water is a liquid at room temperature.

(b) An iron almirah is a solid.

Answer 1

(a) Water is a liquid at room temperature because:

(i) Water has a fixed volume where the particles are moveable (which does not change on changing its container).
(ii) Water has no fixed shape (it takes the shape of the container in which it is kept).


(b) An iron almirah is solid because:

(i) It has a fixed shape where the particles are not moveable (which cannot be changed by pressing it with hands).
(ii) It has a fixed volume (which depends on the dimensions according to which it is made).