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Sustainability Lesson Clearinghouse

Electrolysis of Water

Lesson Description:
Students observe the electrolysis of water using either photovoltaics or a battery as the electric energy source.
Lesson Type:
  • Experiment

Sustainability Topic:
  • Water

GEF Program Category:
  • Sustainable Water Challenge

Time Needed:
1 hour
Standards Addressed:
National standards: 5-8

-Int-b: 1.e. There are more than 100 known elements that combine in many ways to produce compounds, which account for the living and nonliving substances in the world.

-Int-b: 3.e. Electrical circuits provide a means of transferring electrical energy.

-Int-b: 3.f. In most chemical and nuclear reactions, energy is transferred into or out of a system. heat, light, mechanical motion, or electricity might all be involved in such transfers.
Materials Needed:
  • Handouts included
  • Photovoltaic cell (3v min) or 9-volt battery (one per group)
  • Piece of aluminum foil, approx. 6 cm x 10 cm (two per group)
  • Electrical wires with alligator clips (two per group)
  • Beaker or small bowl (one per group)
  • Water
  • Stirring rod or spoon
  • Graduated cylinder (several per class)
  • Science journal 

School or Group:
Energy Education and Workforce Development
Contact Email:
Service @greeneducation.com
Notes:
Http://www1.eere.energy.gov/education/lessonplans/plans.aspx?id=266
Located in: Science

The Sustainability Lesson Clearinghouse is brought to you in partnership with

Center for Green Schools