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Flashcards in Checkpoint 5 Deck (18)
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1

What gives rise to intermolecular forces?

Polarity and shape

2

Attractive forces between molecules

Intermolecular forces

3

How do you break intermolecular forces?

Pulling molecules apart

4

Attractive forces within the molecule

Intramolecular forces

5

How do you break intramolecular forces?

Breaking bonds

6

Forces between polar molecules

Dipole-dipole

7

Strongest intermolecular force

H-bonds

8

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

N,O,F

9

Forces that are present in all molecules

London forces

10

What makes for stronger London forces?

Size, more electrons

11

What makes dipole-dipole forces stronger?

Polarity

12

Energy changes to a system can produce changes in...

State, temperature

13

Amount of energy required to melt 1 gram of a sample

Heat of fusion

14

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

Heat of vaporization

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

Specific heat

16

What bonds are soluble?

h-bonds, ionic, more oxygen, polar

17

What bonds are insoluble?

nonpolar

18

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

Like dissolves like