Checkpoint 5

Question 1

What gives rise to intermolecular forces?

Answer 1

Polarity and shape

Question 2

Attractive forces between molecules

Answer 2

Intermolecular forces

Question 3

How do you break intermolecular forces?

Answer 3

Pulling molecules apart

Question 4

Attractive forces within the molecule

Answer 4

Intramolecular forces

Question 5

How do you break intramolecular forces?

Answer 5

Breaking bonds

Question 6

Forces between polar molecules

Answer 6

Dipole-dipole

Question 7

Strongest intermolecular force

Answer 7

H-bonds

Question 8

What 3 elements must be present for a H-bond?

Answer 8

N,O,F

Question 9

Forces that are present in all molecules

Answer 9

London forces

Question 10

What makes for stronger London forces?

Answer 10

Size, more electrons

Question 11

What makes dipole-dipole forces stronger?

Answer 11

Polarity

Question 12

Energy changes to a system can produce changes in…

Answer 12

State, temperature

Question 13

Amount of energy required to melt 1 gram of a sample

Answer 13

Heat of fusion

Question 14

Corresponding amount of energy required to boil 1 gram of a sample

Answer 14

Heat of vaporization

Question 15

Energy required to increase the temperature of 1 gram of a substance by 1 C; how quickly or slowly a substance heats or cools

Answer 15

Specific heat

Question 16

What bonds are soluble?

Answer 16

h-bonds, ionic, more oxygen, polar

Question 17

What bonds are insoluble?

Answer 17

nonpolar

Question 18

If the intermolecular forces within both the solute and solvent are similar (both polar or non polar) the solute is soluble

Answer 18

Like dissolves like