Intermolecular Forces

Question 1

Intramolecular Forces

Answer 1

They are Covalent bonds which keep atoms clustered together within the molecule

Question 2

Dipole dipole forces

Answer 2

• Occurs between the oppositely charged ends of polar molecules
• Only in polar molecules
• Electrostatic Attraction between polar molecule with one partial charge and another polar molecule with opposite partial charge
• stronger the dipole-dipole forces, the higher the melting and boiling

Question 3

Dispersion Forces

Answer 3

intermolecular force
-Weakest force
- present in all molecules, mostly non polar
- Due to random movement of electrons within a molecule producing varying temporary dipole making it temp polar
- Dipole on one atom induces dipoles on nearby atoms

-Size of molecule increase = increase dispersion force

Question 4

Intermolecular Forces

Answer 4

An electrostatic force of attraction between molecules

Question 5

Hydrogen Bonding

Answer 5

-Strongest force
Attraction between a lone pair of electrons ( F, O or N atom) and hydrogen atom that is already covalently bonded to Fluorine, Oxygen and Nitrogen atom

Question 6

Polar Covalent

Answer 6

Two different atoms
- where electrons aren’t shared equally,
- with the electron pair being closer to the more electronegative atom

Question 7

Purely Covalent

Answer 7

Two identical atoms where electrons are shared equally

Question 8

Ionic Polar

Answer 8

Atoms which vary greatly in electronegativity, the electrons transfer to the more electronegative one

Question 9

Polar Molecules VS Non Polar

Answer 9

Polar Molecules: Uneven Charge distributions

Non Polar Molecules: Even charge distributions