I have a PhD in chemical engineering. I have 3 years experience tutoring students in college and currently am teaching Math in college. Mathematics is a language. I know this language pretty good and having a PhD in engineering major makes me excellent at all subjects in math. Chemical engineering is my major and I have been in engineering school studying it for 12 years. So, I would say I am an experienced chemical engineer with extensive knowledge mainly in Thermodynamics, Fluid mechanics and