1. . What happens when the atoms of a substance are regrouped? A. gold becomes malleable
B. the atoms break apart and disappear
C. a new substance is formed
D. the substance stays the same
2. The creation of carbon monoxide is an effect. What is one cause?
A. the regrouping of the atoms in table salt
B. the burning of fossil fuels
C. cleaning swimming pools
D. operating a stove

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.