Valence Electrons
This shows you how to determine the number of electrons an element has.
Lewis Structures for Ionic Compounds
This shows you how to make Lewis structures for ionic compounds. He uses brackets, which you don’t need to use.
More info on Lewis’s cubical model of the atom
This article has one of Lewis’s hand drawings as well as a couple of quotes.
Lewis Structures for Covalent Compounds
This shows you how to make Lewis structures for covalent compounds. You don’t need to worry about the material after 9:08 (double and triple bonds), but it is interesting.
Phases of Matter
This video discusses the phases of matter and how to go from one to another.
Phases of Matter
This video has a fun discussion about the differences between the phases of matter.
Polar Bonds and Hydrogen Bonding
This video explains polarity and hydrogen bonding.
Ice Floats on Water
This video discusses why ice floats on water and why that is important.