Intermolecular forces

Question 1

intermolecular forces determine ____ properties for example:

Answer 1

physical

melting/boiling points, solubility

Question 2

intermolecular forces are comparatively ____ than INTRAmolecular forces

Answer 2

weaker

Question 3

what are the 3 types of intermolecular forces?

Answer 3

• hydrogen bonding
• dipole-dipole
• dispersion forces

Question 4

what is hydrogen bonding?

Answer 4

hydrogen forms a bond with the 3 most electronegative elements (fluorine, oxygen and nitrogen)

Question 5

what is dipole-dipole bonding?

Answer 5

electrostatic attractions between polar molecules: negative end attracts the positive end of another molecule

Question 6

in dipole-dipole bonding, the stronger the charges, the stronger the bond, true/false

Answer 6

true

Question 7

what is a dispersion force?

Answer 7

electrons are constantly moving, when they align with a molecule they create a temporary dipole

the electrostatic attraction between molecules caused by fluctuating dipoles is a dispersion force