Nitrogen
Sentences
The symbol of nitrogen is N. The atomic number is 7 and the atomic mass is 14.0067.
The period number is 2 and the group number is 15. The group name is Pnictogen. Nitrogen is a non- metal and its state of matter is a gas.
Atmosphere
Nitrogen is the primary source of the air that we breath in the atmosphere everyday. It makes up the three quarters of the air we breathe.
Soil nutrients
Plants need nitrogen to grow. They get this nitrogen from the soil they grow in. The nitrogen is sucked in through the roots and flows all the way up the leaves.
Coolant
Nitrogen is used as a refrigerant. When it is in a liquid form it is very cold. It is the main source used in refrigerators to keep them cold. Scientists also use nitrogen to keep things frozen.