Intermolecular Forces

Discover the role played by intermolecular forces in changing the state of matter between solid, liquid and gas. Chemistry - Atoms And Bonding - Learning Points. Intermolecular forces are the attractive forces between molecules. Intermolecular forces determine whether a substance is a solid, liquid or gas. The size of the molecule and the distance between molecules affect the strength of the intermolecular force. Intermolecular forces are overcome when a substance changes state. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.