Intermolecular Forces

Question 1

Intermolecular forces

Answer 1

Forces that exist between two or more molecules

Question 2

Two types of IM forced

Answer 2

Cohesive = attractive

Repulsive

Question 3

Coulomb’s Law

Answer 3

F = k((Q1•Q2)/R^2)
k = Coulomb's constant: 9.0x10^9
Q = charge of particle
R = distance b/w charges

Question 4

Coulombs Law

Answer 4

Like Charges repel (F = +)

Opposite charges attract( F = -)

Question 5

Electron cloud repulsion

Answer 5

Prevents atoms, which are 99.99% empty, from passing right through one another ( driving force behind VSEPR theory)

Question 6

Steric hinderance

Answer 6

Electro cloud repulsion

Question 7

Three types of intermolecular attractions

Answer 7

Strong(ionic)
Intermediate(dipole)
Very weak(dispersion)

Question 8

Ionic bond

Answer 8

Electrostatic attraction between two ions

F~ Q1Q2

Question 9

Dipole moments

Answer 9

Crates in polar molecules that have an asymmetric distribution of electron density

Question 10

Dipole moments

Answer 10

One end of the molecule has a negative charge and the other has a positive charge; overall charge is 0

Question 11

Dipole forces

Answer 11

The interactions between the charged portions of polar molecules

Question 12

Hydrogen bonding

Answer 12

Type of dipole force when hydrogen is bonded to an electronegative atoms such as O, N, or F

Question 13

Instantaneous dipole

Answer 13

When an atom has a slightly positive side and a slightly negative side

Question 14

Dispersion force

Answer 14

The attraction between two adjacent, instantaneous, oppositely charged dipoles that happen to pop up at the same time