High Intermolecular Force of Attraction:
Ice
- Ice has a high intermolecular force of attraction due to hydrogen bonding between water molecules. This results in a solid crystal lattice structure with molecules held tightly together.
Sugar
- Sugar molecules also have a high intermolecular force of attraction due to hydrogen bonding and dipole-dipole interactions. This leads to the formation of a solid crystalline structure.
Copper
- Copper has a high intermolecular force of attraction because of metallic bonding. This type of bonding involves the sharing of electrons between copper atoms, resulting in a strong attraction between the atoms.

Low Intermolecular Force of Attraction:
Nitrogen
- Nitrogen molecules have a low intermolecular force of attraction as they are nonpolar and only have weak van der Waals forces holding them together. This allows nitrogen to exist as a gas at room temperature.
Air
- Air is a mixture of gases such as nitrogen, oxygen, and carbon dioxide, all of which have relatively low intermolecular forces of attraction. This is why air is a gas and can easily expand to fill its container.
Salt
- Salt crystals have a low intermolecular force of attraction because they are held together by ionic bonds. These bonds are strong but do not involve interactions between individual molecules.
Plastic
- Plastics have a low intermolecular force of attraction due to their nonpolar nature. This results in weak van der Waals forces between polymer chains, allowing plastics to be flexible and easily molded.