Transcript How do we sort a mixture?

Mixture of Gases in Air
All Other Gases
Argon = 0.93%
Carbon Dioxide = 0.04%
NITROGEN
• A major part of proteins, including
DNA
• Dilutes (thins out) the oxygen – too
much or too little oxygen and we
would die!
• Turned into useful form
by nitrogen-fixing bacteria
OXYGEN
• Necessary to survive! Our
cells use oxygen to create
energy
• All of the oxygen in our
atmosphere has been
created by plants –
photosynthesis!
• Burning requires oxygen
CARBON DIOXIDE
• Used by plants for photosynthesis
• A greenhouse gas – carbon dioxide
helps keep our planet warm
• Increases in CO2 have been making
the planet warmer: global warming!
TRACE GASES
• OZONE helps filter out the
sun’s harmful rays
• ARGON is used in light bulbs
because it will not catch fire
even in extreme heat
• WATER VAPOR can condense
to form clouds
• HELIUM inflates balloons
and blimps