intermolecular bonding

Question 1

what are van de wall bonds / london forces

Answer 1

are weak forces that make molecules stick together. They happen because of tiny, temporary charges.

Question 2

what is a dipole dipole force

Answer 2

Dipole-dipole forces are attractions between molecules with positive and negative ends.
The positive end of one molecule attracts the negative end of another.

Question 3

what is hydrogen bonding

Answer 3

Hydrogen bonding is a strong attraction between hydrogen and atoms like oxygen, nitrogen, or fluorine.
The hydrogen atom is attracted to the negative part of another molecule.