Bonding and Matter Properties

• Ionic bonding is the electrostatic attraction between positive and negative ions. It is a relatively strong attraction
• How are ionic compounds held together?

  • In a giant lattice
  • it's a regular structure that extends in all directions of a substance
  • Electrostatic attraction between positive and negative ions holds the substance together
• Properties of ionic substances:

  • High melting and boiling point (strong intermolecular forces)
  • Does not conduct electricity in solids (ions in fixed positions)
  • Conducts when liquid or dissolved in water (ions are free to move)
• Ionic compounds are the reaction of a metal with a non-metal
• In ionic bonding the metal gives it's outer shell electrons to the non-metal
• A covalent bond is a shared pair of electrons between two atoms
• Properties of covalent substances:

  • Do not conduct electricity (no ions)
  • Small molecules
  • Weak intermolecular forces
  • Low melting and boiling points