intermolecular and intramolecular

Question 1

Intramolecular forces

Answer 1

A force that holds the atoms within a molecule together

Question 2

Intermolecular forces

Answer 2

An electrostatic force of attraction between molecules including dipole dipole forces, hydrogen bonds and disperion forces

Question 3

3 types of intermolecular forces

Answer 3

dispersion forces
dipole dipole forces
hydrogen bonding

Question 4

Dispersion and dipole dipole forces are also known as what

Answer 4

Van der Waals forecs

Question 5

Where do Dispersion forces occur

Answer 5

Occurs in all molecules but the only intermolecular force of attraction is found in non polar molecules

Question 6

How do dispersion forces occur

Answer 6

Due to random movement of electrons within a molecule, produces a varying temporary dipole making it temporarily polar

Question 7

What are induced dipoles

Answer 7

Polar molecules causing nearby molecules to form temporary dipoles

Question 8

What is dispersion force

Answer 8

When a molecule with a temporary dipole and molecule with induced dipole experience weak electrostatic attraction

Question 9

How to know if dispersion forces are stronger

Answer 9

Increases as the size of molecule increases (increased number of electrons)
stronger forces high melting and boiling

Question 10

Where do dipole dipole forces occur

Answer 10

Only in polar molecules, and between the oppositely charged ends of the polar moleculs

Question 11

How do dipole dipole forces occur

Answer 11

The more electronegative atom attracts electrons becoming partially negative while less electronegative atom becomes partially positive. This creates a dipole moment in the bond

Question 12

What are the requirements for the dipole moment to be permanent

Answer 12

Molecular geometry must be so that the individual bond dipoles dont cancel eachother out and the molecule is non symmetrical

Question 13

When does strength increase in dipole dipole forces

Answer 13

Increasing molecular polarity (greater difference in electronegativity)
higher degree of asymmetry casuing imbalance in bond dipoles
stronger forces high melting and boiling

Question 14

Where does hydrogen bonds occur

Answer 14

Hydrogen to either Nitrogen oxygen or fluoridne

Question 15

How do hydrogen bonds occur

Answer 15

due to the attraction between lone pair of electrons from NOF atom and a hydrogen atom that is already covalently bonded to another NOF atom