Module 2 - chapter 6 key terms

Question 1

Bond angle

Answer 1

The angle between the bonded pairs of electrons

Question 2

Electronegativity

Answer 2

The ability of an atom to attract the bonding electrons in a covalent bond.

Question 3

Non-polar bond

Answer 3

The bonded pair of electrons is shared equally between the bonded atoms.

Question 4

Pure covalent bond

Answer 4

In molecules of elements such as hydrogen the bonded atoms come from the same element and the electron pair is shared equally. This is a pure covalent bond.

Question 5

Polar covalent bond

Answer 5

A shared pair of electrons where the electron pair is not shared equally between the two bonded atoms. A bond will be polar when the bonded atoms are different and have different electronegativity values.

Question 6

Intermolecular forces

Answer 6

Weak interactions between dipoles of different molecules.

Question 7

Induced dipole-dipole interactions (London forces)

Answer 7

They exist between all molecules (polar and non-polar) and act between induced dipoles in different molecules.

Question 8

Permanent dipole-dipole interactions.

Answer 8

They act between permanent dipoles in different polar molecules.

Question 9

Hydrogen bonding

Answer 9

intermolecular bonding between molecules containing N, O or F and the H atom of -NH, -OH or -FH.

Question 10

dipole

Answer 10

Charge separation across a bond with one atom having a δ+ charge and one atom having a δ- charge.