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HO HO OH!. A H ands O n Investigation Of H ydrogen and O xygen And their OH! (WOW) Properties. Presenter: Justin Guyer email@example.com Fergus High School SHI 2010. RATIONAL. Hands-On Activity/High S tudent Interest Multiple science concepts:
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HO HO OH! A Hands On Investigation Of Hydrogen and Oxygen And their OH! (WOW) Properties. Presenter: Justin Guyer firstname.lastname@example.org Fergus High School SHI 2010
RATIONAL • Hands-On Activity/High Student Interest • Multiple science concepts: • Properties of matter and measurement • Atoms, molecules, and ions • Properties of gases • Stoichiometry • Thermochemistry • Scientific Method • Apply lab equipment, lab technique, and lab safety • Portfolio of 36 Labs to compliment High School Chemistry course
Montana Standards • Content Standard 1 • Students, through the inquiry process, demonstrate the ability to design, conduct, evaluate, and communicate results an reasonable conclusions of scientific investigations. • Content Standard 2 • Students, through the inquiry process, demonstrate knowledge of properties, forms, changes and interactions of physical and chemical systems. • Content Standard 6 • Students understand historical developments in science and technology.
General Instructional Goals • Students will be able to: • Collect and test for hydrogen and oxygen gas • Understand the principles of combustion reactions, exothermic and endothermic reactions, stoichiometry of reactions. • Launch a simple rocket that uses H2 and O2 gases. • explore and determine the proportions of hydrogen and oxygen mixture that will achieve the best launch results. • compare the balanced chemical reaction of hydrogen and oxygen with their lab results; • Perform the lab, collect data, and discuss, compare, and contrast their lab findings .
Topic Sequence • Electrolysis of water • Methods of collecting Hydrogen gas • Properties of hydrogen gas • Methods of collecting Oxygen gas • Properties of oxygen gas • Scientific process of testing the best hydrogen/oxygen mixture to propel rocket
Materials • Electrolysis apparatus • Tesla coil • Hydrogen peroxide 30% • Manganese dioxide • Power supply • Plastic pipettes • Zinc or magnesium • Hydrochloric acid • Test tubes w/1 hole stoppers • Glass tubes • Syringes • 12-gauge copper wire • Water trough and gas collecting apparatus
Individual lesson Plans • Day 1 Electrolysis of water • Classification of matter, properties of gases, chemical reaction, acidity? • Day 2 Generation and collection of H2 • Properties of gas, thermochemistry, stoichiometry, gas laws, chemical reaction • Day 3 Generation and collection of O2 • Properties of gas, thermochemistry, stoichiometry, gas laws, chemical reaction • Day 4 & 5 Process of building and testing rockets
Launching the Rockets 1. Cut the end off of a pipette leaving about 2 cm of stem attached to the bulb. Place 4 equal marks on bulb of pipette with permanent marker for ratio use.2. Immerse the pipette in a pan of water and completely fill the "rocket" with water. 3. Slowly displace the water with the hydrogen and/or oxygen gases .(Best method-test tube, glass tubing?)4. Slip the pipette rocket over a copper wire (12-14 gauge) that is grounded to Earth until the ends of the copper wire are above the water in the gas-filled region of the pipette.5. With some water in the stem, launch the rocket by triggering a sparkwith tesla coil.6. Vary the activity by changing the ratios of gas mixtures, and or try cutting the tips of the pipettes to two or three different lengths.
Learner Outcomes • Balancing and type of chemical equations • Stoichiometry • Gas Laws PV=nRT • Error analysis • Physical and chemical properties of hydrogen and oxygen gas • Understanding of exothermic vs endothermic • Newton’s laws of motion • Vocabulary development • Lab technique and tool usage • Scientific method • Variables
General Objectives/Assessment • Capstone Project • Since all concepts will have been learned prior to doing this unit, students will generate a detailed lab report incorporating concepts mentioned before.
Assessment of SHI Project • Ways to determine success of Project • Increase of Student scores on tests and quizzes • Capstone project • Formal Assessment of student understanding of vocabulary and concepts while doing the lab. • Continued increase of students taking chemistry and AP Chemistry • HO HO OH!