Question

Fill in the following blanks with suitable words :
(a) The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
(b) The smell of perfume gradually spreads across a room due to .....................
(c) Solid, liquid and gas are the three ........................ of matter.
(d) At room temperature, the forces of attraction between the particles of solid substances are ....................... then those which exist in the gaseous state.
(e) The arrangement of particles is less ordered in the ...................... state. However, there is no order in the ..................... state .

Answer 1

(a) The best evidence of the particles of matter are constantly moving comes from the studies of diffusion and Brownian motion.
(b) The smell of perfume gradually spreads across a room due to diffusion.
(c) Solid, liquid and gas are the three states of matter.
(d) At room temperature, the forces of attraction between the particles of solid substances are much more than those which exist in the gaseous state.
(e) The arrangement of particles is less ordered in the liquid state. However, there is no order in the gaseous state.