Topic 9 - Intermolecular forces

Intermolecular Forces

1. Describe hydrogen bonding, using ammonia and water as simple examples of molecules containing -NH and -OH groups.
2. Describe intermolecular forces (van der Waal’s forces and dipole-dipole interaction), based on permanent and induced dipoles, as in liquid CHCl₃ and liquid Br₂ and the liquid noble gases.
3. Use van der Waal’s forces and dipole-dipole interaction to show the effect of size of similar molecules and surface area in isomers on physical properties such as boiling points.
4. Describe in simple terms, the lattice structure of a crystalline solid which is hydrogen bonded, as in ice and hydrated salts.
5. Describe, interpret and/or predict the effect of different types of inter- and intramolecular bonding on the physical properties of substances.
6. Deduce the type of bonding present from information such as solubility and boiling points.
7. Discuss the solubility of covalently bonded (molecular) compounds.

Top of Page