Tom Green explains the covalent bonds between carbon and methane, and he represents them using a Lewis Dot Structure. Tom then explains how to read the structure. He also gives some background information on Gilbert Lewis, the creator of the Lewis Dot structure and one of the most influential chemists in history.
Ionic bonding is a type of chemical bond that involves the attraction between oppositely charged ions. Unlike covalent bonds, ionic bonds do not share electrons; instead, they donate or accept electrons.
Max is looking to make a large profit for his investment firm. He tells his employees to sell bonds when the price is high and to buy when the price is low. They are selling at such a large volume that they are influencing the price of the bond.