What makes liquid to be solid?

Answer 1

Molecules in liquids move in a random pattern relative to one another because of the intermolecular forces are too weak to hold the atoms or molecules in a solid form. When cooling, the molecules lose their energy and they move slower. As the intermolecular forces of attraction become stronger molecules come closer to each other and are held together as a solid. Forces that attract molecules to other molecules are covalent bonding, hydrogen bonding, dipole-dipole attraction, and london dispersion forces. Covalent bonds are usually the strongest.