Ionic compounds

• What kind of structure do ionic compounds usually form?

  crystal structures
• Do they have low melting and boiling points?

  No
• Why do they have a high melting and boiling points?

  They have strong electrostatic forces
• When can they conduct electricity

  When they are dissolved in water or melted
• Why can they conduct electricity in water or when melted?

  the ions are free to move and carry an electric charge