CHY 599 Lecture Notes - Lecture 1: Nitrogen Dioxide, Ultraviolet, Sulfur Oxide
17 Jul 2016
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Document Summary
Atmosphere is the tin veil between the outer space and us. Human activities leave air prints that alter the composition of the atmosphere. Indoor air print: growing house plants, burning candles, applying paint. Green plants remove co2 and adds oxygen = good for humans. What"s in a breath? adults breathe 11,000 liters ( 3000 gallons) of air per day. Air is a mixture: a physical combination of to or more pure substances present in variable amounts. Pure substances that are major components of air: nitrogen, oxygen, argon, Composition of air changed depending on where you are ( small room, more pollution, dense area etc. ) Air we breathe is 78% nitrogen and 21% oxygen 1% other. Water vapor is colorless hence its invisible ( fog is not water vapor) Respiration food we eat are metabolized to produce carbon dioxide and oxygen is the most abundant in the human body water.
