Paper 3 · kinetic theory of gases
Which two assumptions are made in the kinetic theory of gases?
AMolecules are close together but do not attract each other.
BMolecules are large and are widely separated.
CMolecules have no volume and do not attract each other.
DMolecules have the same average kinetic energy and undergo elastic collisions.
Explanation: The marking scheme gives answer C. The kinetic theory assumes gas molecules have negligible volume (point masses) and exert no intermolecular forces on each other.
ZIMSEC Chemistry Paper 3, November 2009, Q6
