This video lecture from Thermochemistry (F.Sc. Chemistry Book 1) covers the concept of the internal energy in terms of the kinetic energy due to translational, vibration and rotational motion and Potential energy in terms of the attractive forces, the concept of energy transference in terms of heat and work with examples. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.