AS 1.4: Intermolecular Forces

Question 1

Intermolecular Forces

Answer 1

The forces between neighbouring molecules (as opposed to intramolecular).

Question 2

Van Der Waals’ Forces

Answer 2

Forces of attraction between instantaneous and induced dipoles on neighbouring molecules.

Question 3

Permanent Dipole-Dipole Attractions

Answer 3

The forces of attractiuon between the positive end (δ+) of the permanent dipole on a molecule with the negative end (δ-) of the permanent dipole of a neighbouring molecule.

Question 4

Hydrogen Bond

Answer 4

The force of attraction between a lone pair of electrons on a very electronegative atom (N, O and F) on one molecule and a neighbouring hydrogen molecule, in which the hydrogen is covalently bonded to the very electronegative atom.

Question 5

Electronegativity

Answer 5

The extent to which an atom attracts the bonding electrons in a covalent bond.

Question 6

Polar Bond

Answer 6

A covalent bond in which there is unequal sharing of the bonding electrons.