Classroom Activity

Text Size


Key Topic: Oxidation-Reduction, Stoichiometry, Electrochemistry

Maintaining a permanent human presence on the International Space Station requires a well organized and precise life support system, a part of which is the Oxygen Generator System. Students will learn about how the OGS produces breathable oxygen for the crew by converting wastewater from the ISS into oxygen and hydrogen through the process of electrolysis.

Students will
  • explain what is meant by the direction, form and strength of the overall pattern of a scatter plot;
  • write balanced equations for half reactions;
  • predict direction of oxidation-reduction reactions; and
  • determine mass and volume relationship with an emphasis on mole concepts.

› Oxygen Generator System Educator Edition (PDF 142 KB)
› Oxygen Generator System Student Edition (PDF 115 KB)

Related Resources
› VIDEO: Real World: Environmental Control on the International Space Station (third video)
› VIDEO: Environmental Thermal Operating Systems