(a) State three postulates of the… | Chemistry

Question 1 Report

(a) State three postulates of the kinetic theory

(b) Name the process involved in the;

(i) spread of the smell of a perfume across a room

(ii) decrease in the yellow of a liquid after exposure in an open vessel.

Answer

Answer Details

(a) Three postulates of the kinetic theory

All matter is made up of tiny particles (atoms or molecules) which are in constant, continuous random motion.
The particles possess kinetic energy which increases as the temperature rises (and decreases as it falls).
There are spaces (intermolecular spaces) between the particles, and forces of attraction exist between them; these spaces are largest in gases and smallest in solids.

(Also acceptable: collisions between the particles are perfectly elastic, so no kinetic energy is lost.)

(b) Processes involved

(i) Spread of the smell of a perfume across a room: diffusion.
(ii) Decrease in the volume of a liquid after exposure in an open vessel: evaporation.

(a) State three postulates of the kinetic theory (b) Name the process involved in the; (i) spread of the smell of a perfume across a room (ii) decrease in t...