The molecules of water are more_________ (loosely/tightly) packed than the molecules of oxygen.
Intermolecular forces of attraction:
Therefore, the molecules of water are more tightly packed than the molecules of oxygen.
The more tightly or closely packed the molecule are in a substance, the _______ that substance is.
The molecules in a solid are ______ packed. (tightly/loosely)
The more tightly packed the molecules are in a substance, the _______ that substance is.