It is a main section of the engineering that uses complete values of the chemistry, physics, mathematics, biology, and economics to professionally use, produce, design, transport and transform energy and materials. The work of chemical engineers can range from the utilization of Nano-technology and Nano-materials in the laboratory to large-scale industrial processes that convert chemicals, raw materials, living cells, microorganisms, and energy into useful forms and products. Here we are also trying to write main and useful points about the chemistry in our in USA. We are trying to help and guide the students so that they complete the work with perfection within the given time.