Mr. Wizard demonstrates the difference between steam and water vapor to Billy using a teapot and flames. He explains that steam is the gas form of water and that we mistakenly refer to water vapor as steam in everyday conversation.
Phil tries to pour himself some water, but some of the water sticks to the pouring glass and spills onto his plate of food. He explains why this happens: because water likes to stick to things due to its cohesive properties. He offers suggestions to prevent water from sticking to the pouring glass, such as changing the angle at which the water is poured out.
Hank explains why solid water is less dense than liquid water even though solids are typically more dense than liquids. He also discusses how the high heat capacity of water helps support life on Earth. He uses the bodily process of sweating to exemplify water's unique properties.