Intermolecular force facts for kids
These forces are generally much weaker than the chemical bonding forces. Their bonding energies are less than a few kcal/mol. But they are responsible for many different physical, chemical, and biological phenomena. In general one distinguishes short and long range intermolecular forces. (The molecule is a substance are held together by the forces acting between the molecules which are called inter-molecular forces)
Software for calculation of intermolecular forces
Intermolecular force Facts for Kids. Kiddle Encyclopedia.