Hydrogen in Society

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Hydrogen in Society
This presentation is provided courtesy of
www.NEED.org and is from a Teacher Workshop
held on 9/22/09 for Nassau BOCES
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Hydrogen In Society

• Unifying Activity
• Focuses Learning
• Interdisciplinary
• Students create presentations

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Hydrogen In Society Structure

• Students assume roles provides a perspective
  from which to research H2
• Students work in role groups to help one another
  with their research
• Presentation groups are formed with one person
  from each role group
• Students create and deliver presentations

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Page 21 (TG)
Assign Roles
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Hydrogen In Society Sample Role Group Questions
Page 16 (TG)
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Element Models
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Proton
Neutron
No Charge
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Hydrogen Atom

• Nucleus

1 Proton 0 Neutrons
Electron
1st shell of any atom can hold up to 2
electrons
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H2 Molcecule
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Oxygen Atom
Water Molecule

• Nucleus

8 Protons 8 Neutrons
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Comparing Energy Systems
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Page 17
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Electrolysis
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Electrolysis Discussion Questions

• What did you learn about the composition of
  water?
• Explain how electrical energy decomposes water.
  Use the terms anode, cathode, oxidation, and
  reduction.
• Which gas is attracted is attracted to the
  positive electrode and which one to the negative?
  Explain why each gas is attracted to each
  electrode.

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Electrolysis Discussion Questions

• Explain how to test for hydrogen and oxygen
  gases.
• Balance this equation for the decomposition of
  water
• Electricity 8H2O _____ H2 _____ O2

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Electrolysis Variable Questions

• How would using distilled water with no
  electrolyte affect the results?
• How would increasing the concentration of the
  electrolyte affect the results?
• How would increasing the voltage affect the
  results? (connecting 2-4 batteries in series)

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Electrolysis Variable Questions

• How would increasing the current affect the
  results? (connecting 2-4 batteries in parallel)
• How would changing the temperature of the
  solution affect the results?
• How would using salt or baking soda as the
  electrolyte affect the results?

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Fuel Cell Simulation
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Fuel Cell Simulation

• Students (15) play the following roles
• 4 Hydrogen Atoms (H)
• 2 Oxygen Atoms (O)
• 2 Anodes (A)
• 2 Cathodes (CA)
• 2 PEMS (P)
• 3 Circuit Members (C)

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  Presentation Groups
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Your Plan for the Hydrogen Economy

• What sources would you use?
• How would you produce and store it?
• How would you transport and deliver to the
  customer?
• Will this plan make our energy supply more
  reliable and secure?
• Will this plan bring affordable energy to us?
• Will this plan improve our environmental quality?

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Mission H2
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Mission H2 Goals

• Students will become familiar with alternatives
  to fossil-based energy resources.
• Students will discover where hydrogen exists in
  our lives today, both in its elemental form and
  more commonly as a component of all organic
  matter.
• Students will guide themselves through a future
  world where hydrogen is the fuel of choice to
  provide heat and light to our homes, schools, and
  workplaces and to provide power to our
  automobiles and other transport vehicles.

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Mission H2 Goals

• Students will learn about several uses for
  hydrogen as a fuel used in place of gasoline as
  an alternative to electricity as an energy
  carrier as an alternative to batteries for
  energy storage and, as a way to utilize our
  Nation's renewable, natural resources.
• Students will be taught that like other chemicals
  hydrogen needs to be respected, but not feared.
• Teachers will have the opportunity to address
  hydrogen issues from both technical and/or social
  science perspectives.