Beakman explains chemical reactions and discusses how chemicals can be put together without reacting. He provides examples of both solutions and suspensions and demonstrates how to use a flashlight to tell if a mixture is a solution or a suspension.
Using limited resources, the team at NASA needs to invent a way to fit a square cartridge into a round hole in order to create a CO2 filter. This filter would prevent the CO2 levels from rising too high in the spacecraft. Otherwise, the crew will face complications such as impaired judgment and blackouts.