Small molecules

• Give two properties of a small molecule.

  Low melting and boiling points.
• What happens as the intermolecular forces increase In Small Molecules?

  They increase with the size of the molecule, having higher melting and boiling points.
• Why don’t small molecules conduct electricity?

  As they have no overall electric charge.
• Substances containing covalent bonds have

  Simple molecular structures
• Atoms within the molecules are held together by..

  Strong covalent bonds
• Are the forces of attraction between small molecules weak or strong?

  Weak
• To melt/boil a simple molecular compound, you have to….


  Break the feeble intermolecular forces, and not the covalent bonds.
• Why do they have low melting and boiling points?

  Because as they break their intermolecular forces, the molecules are separate from each other
• What happens as the molecule gets bigger?

  The strength of the intermolecular forces increases, meaning more energy is required to break them. Therefore, the melting and boiling points increase.