Do you have trouble drawing a skeletal structure of 2,2-dichloro-3-methyl-pentane (C6H12Cl2)? Do you mistake the cosine rule with the sine rule or a tangent with a cotangent? Or maybe you don't know how to calculate the current going through a wire that is approaching a magnet? If you're a high-school level or younger student, contact me and I'll make sure you understand any topics you need for school, as long as they're part of Physics, Chemistry or Mathematics. I'm currently studying for the Bachelor of Science in Chemical Engineering at the University of Groningen. Before that, I obtained the International Baccalaureate Diploma with Chemistry, Math and Physics on a higher level, and I got the highest grades - I believe so can you.