Chemistry

Introduction 

Nitrogen is an atom which is also the first element in column 15 of the periodic table (Johnson, 2012). It is part of the group of "other" nonmetal elements (Johnson, 2012). Although air is largely associated as "oxygen", the most common element in air is nitrogen (Johnson, 2012). The Earth's atmosphere is 78% nitrogen gas. Despite the fact that there is a lot of nitrogen in the air, there is very little in the Earth's crust (Johnson, 2012). It can also be found in rare minerals such as saltpeter and can be found in all living organisms on Earth such as plants and animals (Johnson, 2012).