3.4: Intermolecular Forces

Question 1

Define intermolecular forces

Answer 1

forces of attraction and repulsion between molecules

Question 2

Define intramolecular forces

Answer 2

bonds within a molecule that hold it together

Question 3

Define Van der Waals forces

Answer 3

a distance dependent attraction between molecules

Question 4

Define dipole-dipole force

Answer 4

Attraction between dipoles, weakest intermolecular forces

Question 5

Define london force

Answer 5

a temporary attraction between dipoles, when adjacent electrons occupy positions that allow temporary dipoles to form

Question 6

Define isoelectronic molecules

Answer 6

molecules with the same number of electrons, have similar London force

Question 7

What forces do polar molecules have?

Answer 7

London forces and dipole-dipole forces

Question 8

What forces do non polar molecules have?

Answer 8

Just London forces

Question 9

Define hydrogen bond

Answer 9

where a hydrogen nucleus can be shared between pairs of electrons

Question 10

What 3 compounds will have hydrogen bonding?

Answer 10

HF, any compound with -OH or -NH

Question 11

What is Adhesion force?

Answer 11

attraction between different molecules

Question 12

What is cohesion force?

Answer 12

attraction between same molecules