Lesson 7: Review Forces

Question 1

Attractive forces between molecules

Answer 1

Intermolecular forces

Question 2

All intermolecular interactions are ________, involving attractions between positive and negative species

Answer 2

Electrostatic

Question 3

3 types of intermolecular forces

Answer 3

• van der Waals
• Hydrogen bonding
• Ion-dipole interaction

Question 4

Are the forces that hold molecules in a substance

Answer 4

Intermolecular forces

Question 5

Are the forces that hold atoms in a molecule

Answer 5

Intramolecular forces

Question 6

Intramolecular forces is _______ than intermolecular forces

Answer 6

Stronger

Question 7

Determine the state of matter (solid/ liquid/ gas) and their physical properties such as melting and boiling point etc.

Answer 7

Intermolecular forces

Question 8

Determine chemical behavior of a substance

Answer 8

Intramolecular forces

Question 9

Attractive forces

Answer 9

Intermolecular forces

Question 10

Chemical bonds

Answer 10

Intramolecular forces

Question 11

Categorize into dipole-dipole forces, london dispersion forces, and hydrogen bonding forces

Answer 11

Intermolecular forces

Question 12

Categorized into covalent, ionic, and metal bonsa

Answer 12

Intramolecular forces

Question 13

3 types of van der waal forces

Answer 13

London
Debye
Keesom

Question 14

London

Answer 14

dispersion forces (induced dipole-induced dipole)

Question 15

Debye

Answer 15

Dipole-induced dipole

Question 16

Keesom

Answer 16

Dipole-dipole

Question 17

attractive force that arises as a result of temporary dipoles induced in atoms or molecule

Answer 17

London dispersion force

Question 18

Present in all substances

Answer 18

London dispersion force

Question 19

Weakest force

Answer 19

London dispersion force

Question 20

An instantaneous dipole (due to movement of electrons)

Answer 20

London dispersion forces

Question 21

significant only when molecules are close together

Answer 21

London dispersion force

Question 22

How do area of contact affects london dispersion forces?

Answer 22

greater area of contact, stronger London
dispersion forces

Question 23

How do MW affect London dispersion force

Answer 23

Increase in MW increases London dispersion force

Question 24

Branching ________ London dispersion force

Answer 24

Decreases

Question 25

a.k.a. dipole-dipole interaction

Answer 25

Keesom force

Question 26

electrostatic attraction between the partially positive end of one molecule and the partially negative end of a neighboring molecule

Answer 26

Keesom force

Question 27

present in polar compounds

Answer 27

Keesom force

Question 28

stronger than London dispersion force

Answer 28

Keesom force

Question 29

- depends on polarity - Increase in polarity increases this

Answer 29

Keesom force

Question 30

London & keesom

Answer 30

Both are van der waals

Question 31

Even though Keesom is stronger, London is more significant in ___________

Answer 31

determining the bulk properties of matter

Question 32

electrostatic attraction between a hydrogen attached to an electronegative atom (N, O, F) and a lone pair of an electronegative atom (N, O, F) in another molecule

Answer 32

Hydrogen bonding

Question 33

a strong type of dipole-dipole interaction

Answer 33

Hydrogen bonding

Question 34

depends on the electronegativity of atom interacting with hydrogen

Answer 34

Hydrogen bonding

Question 35

electrostatic attraction between an ion and a polar molecule

Answer 35

Ion-dipole interaction

Question 36

______ with partially negative end of polar molecule

Answer 36

Cation

Question 37

______ with partially positive end of polar molecule

Answer 37

Anion

Question 38

present in ionic compounds dissolved in polar solvents

Answer 38

Ion-dipole reaction

Question 39

Strongest

Answer 39

Ion-dipole interaction

Question 41

depends on ionic charge and polarity

Answer 41

Ion-dipole interaction

Question 42

Important IMFS in structural effects _________ - less polar _________ - more polar _________ - not significant

Answer 42

London dispersion H-bonding Keesom