Launching Soda Bottle Rockets using Hydrogen + Oxygen Steve
Sogo Laguna Beach High School
Slide 3
Photo of hydrogen- powered soda bottle rocket in flight Photo
credit = Cameron Zuziak, LBHS class of 2014
Slide 4
Electronic Ignition Students make electronic fuses from
aluminum foilthis allows for safe, reliable ignition.
http://youtu.be/mRMyMwntb8c http://youtu.be/mRMyMwntb8c
Slide 5
Synopsis of Student Tasks 1.Balance equation for combustion of
H 2 2.Measure volume of bottle (they arent precisely 2.00-liters!)
3.Use mole ratios to determine volumes of H 2 and O 2 needed to
fill the bottle 4.Use ideal gas law to determine moles of gases
needed 2 H 2 (g) + O 2 (g) 2 H 2 O (g)
Slide 6
Synopsis of Student Tasks (part 2) 5.Stoichiometry for
generating O 2 (g) a)Balance equation for decomposition of H 2 O 2
b)Determine mass of H 2 O 2 required c)Determine volume of 10% H 2
O 2 solution required 6.Graph energy profile for catalyzed and
uncatalyzed decomposition reaction (given H and E a values) H = -95
kJ/mol H 2 O 2
Slide 7
Synopsis of Student Tasks (part 3) 7.Stoichiometry for
generating H 2 (g) a)Balance eqn for rxn of Ca with H 2 O
b)Determine mass of Ca needed c)Determine volume of H 2 O needed
d)Calculate kJ of heat produced in the reaction 8.Why use excess H
2 O? 9.How to compensate for oxidized calcium? 10. After launching,
sketch energy profiles and explain why the rocket launches
Slide 8
The bottle makes a difference! Two outcomes are possiblea
rocket that launches into the sky (soda bottle) or a bomb that
explodes impressively (water/juice/milk bottle)
Slide 9
Time for a video! o http://youtu.be/rFakqDf-Bwc
http://youtu.be/rFakqDf-Bwc This student-filmed video shows load
and launch activities (done in a 90 minute class period)
Slide 10
Use of instructional videos Three instructional videos help
students do the right things: Making fuses
http://youtu.be/eaVyCz5Bqrohttp://youtu.be/eaVyCz5Bqro Generating
gases http://youtu.be/hyMHLUUH1Zghttp://youtu.be/hyMHLUUH1Zg Launch
pad procedures http://youtu.be/28zOejqRe6s
http://youtu.be/28zOejqRe6s
Slide 11
AACT will help distribute this lab The Rocket Lab was honored
as a Grand Prize winner in the Best Of submissions to the American
Association of Chemistry Teachers. Student instruction pages and
teacher notes will be provided through the AACT website
Slide 12
Address Questions To: Steve Sogo, Laguna Beach High School
ssogo@ lbusd.org YouTube Channel = ACR92651