What is an ionic compound?

• It contains a cation (+ charged) and an anion (- charged).

• A cation is a metal or NH₄+ (ammonium).

• An anion is a non-metal or a negative polyatomic ion.

• Electrons are transferred from the metal to the non-metal.

What is a covalent compound?

• It contains two non-metals.

• Electrons are shared between two non-metals