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Our Precious Air!

Our Precious Air!. Miss Laverty 2012 *** Experiments, lesson and work sheet adapted from the Edmonton Public curriculum book***. February 29 th. If you are one of the first few people, please hand out the work books Grab today’s worksheet from the blue handout bin

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Our Precious Air!

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  1. Our Precious Air! Miss Laverty 2012 *** Experiments, lesson and work sheet adapted from the Edmonton Public curriculum book***

  2. 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”

  3. Diet Coke & Mentos • Mythbusters explanation: http://www.youtube.com/watch?v=LjbJELjLgZg

  4. 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

  5. Soda Spray • Results: • the diet coke erupted out of the bottle when the candies were added

  6. 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

  7. 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

  8. Gone to Rust

  9. Gone to Rust • Inferences: • Rusting uses oxygen • Once all of the oxygen is used up, no more rusting will occur

  10. 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.

  11. Air

  12. 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!

  13. 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)

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