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In this engaging lesson, students explore the properties of air through experiments adapted from the Edmonton Public curriculum. Key activities include the "Soda Spray" experiment using Diet Coke and Mentos to demonstrate the release of carbon dioxide gas and the rusting of steel wool to illustrate oxygen's role in rusting. Students record their observations, make inferences about gas composition in the atmosphere, and visualize air’s components through graphs. The lesson culminates in a review game and a test on air properties and aerodynamics.
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Our Precious Air! Miss Laverty 2012 *** Experiments, lesson and work sheet adapted from the Edmonton Public curriculum book***
February 29th • If you are one of the first few people, please hand out the work books • Grab today’s worksheet from the blue handout bin • Sit down and show me you are ready to do a “SODA SPRAY”
Diet Coke & Mentos • Mythbusters explanation: http://www.youtube.com/watch?v=LjbJELjLgZg
Soda Spray • Materials: 2L bottle of Diet Coke, 2 Mentos candies • Procedure: • Do this experiment somewhere where it is ok to make a mess (outside) • Open the bottle of pop • Quickly put 2 Mentos candies in the bottle • Observe and record results
Soda Spray • Results: • the diet coke erupted out of the bottle when the candies were added
Soda Spray • Inferences: • Soda pop has carbon dioxide molecules in it • Mentos have lots of tiny craters on the surface • When the carbon dioxide molecules attach to the candy they turn into carbon dioxide gas, which escapes out of the bottle • Carbon dioxide is just one of the gases that make up air
Gone to Rust • Steel wool in the tube for one day • Before and after diagrams • Observations • The steel wool developed rust and the water level rose in the beaker
Gone to Rust • Inferences: • Rusting uses oxygen • Once all of the oxygen is used up, no more rusting will occur
Our Precious AIR! • Air is made up of a mixture of gases. Nitrogen represents 78 %, oxygen makes up 21% and argon, carbon dioxide and other trace gases make up 1% together. Represent these numbers in a pie chart and bar graph.
Title Pages • Use the rubric to get the best mark possible • Include diagrams, labels and descriptions • Do you best work • No errors • Colour • Do sections: 1, 2 and 8!
Tomorrow • Review game tomorrow • Test on FRIDAY! • Take you work book home to study if you would like • You will be tested on every thing we have done since February 14th (Air and Aerodynamics)