Unit 4 -- Bonding
This unit is about intramolecular forces, the attractions that hold atoms together allowing them to make up the multitude of materials you come across everyday. There are three intramolecular forces you need to understand for this course, however the VA SOL only tests you on two of them: ionic and covalent bonds.
Atoms will gain or lose electrons to reach their lowest energy state, this causes them to develop a charge/oxidation state. There are some atoms you're expected to know the oxidation state of. The lecture video will remind you of these, and how ions come together to form ionic bonds.
We also took a quiz on the 18 polyatomic ions found on p. 7 of the packet. You can memorize about 12 of them from the mnemonic device "Nick the camel ate a clam for supper in Phoenix."
This units first sub-unit, is about metallic bonds. The attraction between metal cations that give metals their unique properties. In class we prepared an alloy of brass using pennies and a solution of zinc and sodium hydroxide.