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.

Sophie explains how potholes occur in the street: when water seeps below the ground and freezes. She conducts an experiment to show how water expands when it freezes.

Elsa unintentionally reveals her ice powers when Anna takes off one of her gloves. She runs away from the townspeople after a series of accidents so as not to cause more harm and lose more of the trust of her fellow townspeople.

Bill explains the three states of matter: solids, liquids, and gases. He explains that these states differ in only the amount of energy they contain. Bill also uses several examples to illustrate the difference between the three states.

Hank explains polymers, describes some of their properties, and explains how they are formed. He also explains what you need to make a polymer: a molecule that can easily bond to another identical molecule at two points. Hank focuses on the polymer, Polyethylene, because it is the most common plastic in the world, and discusses its nomenclature.