Nitrous Oxide
Nitrous Oxide is know as sweet air or laughing gas. It is formed when nitrogen and oxygen react together. Nitrogen and oxygen are both non-metals, thus covalent bonding is involved. Both Nitrogen and oxygen are harmless. When it reacts with rain, it will form acid rain. It also contributes alot to global warming. The formula for Nitrous Oxide is : Nitrogen + oxygen (N2O)
Oxygen(harmless)
Oxygen is a colourless, odorless and tasteless element under room temperature and it appears in great abundance in Earth. It is used for respiration and is vital for humans for survive. It makes up 20% of the Earth's atmosphere. It is a highly reactive element, capable of reacting with alot of different kinds of element.
Nitrogen (harmless)
Nitrogen is colourless, odorless, tasteless and mostly at gaseous state under standard conditions. It makes up 78.08% of the Earth's atmosphere. Plants need nitrogen to make protein form pure carbohydrate. Many industrially important compounds contain nitrogen. It is present in all living organism, in protein, in nucleic acid and other molecules.
References
http://www.wisegeek.com/what-is-oxygen.htm
http://en.wikipedia.org/wiki/Nitrous_oxide
http://en.wikipedia.org/wiki/Nitrogen
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