Oxygen

Nitrogen

CO2

• For example C02• WE proved it by

putting a candle in a cup with baking soda and then we lit the candle and put vinegar in with the baking soda and made co2 Which puts out the candle.

• Balloons float by using helium. You can get helium by a compressed air tank.Helium floats. Just like when you put it in balloons.

0% 20% 40% 60% 80%

Oxygen

CO2

Nitrogen

East

-when we put a candle in a cup and use another cup with co2 in it we poured the co2 into the other cup and the candle went out.

• This is all the gasses in the air. Nitrogen, oxygen, argon, carbon, dioxide, neon, helium, krypton, hydrogen, and xenon.

percentages.

xenon0.000008%

krypton0.0001%

Neon0.0018%

oxygen20.9%

Nitrogen78.09%

Hrydrogeno.00005

helium0.0005%

carbon dioxide0.04%

argon0.93%

• http://www.ipl.be/private/Chimie/a_voir/archives/cestavoir1/cestavoir_sommaire.htm

• http://mattson.creighton.edu/CO2/http://www.usatoday.com/tech/columnist/archive.htm

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