I'm started college in September and I have a bit of a headstart since I've already studied chemistry and I noticed the teacher was teaching some inaccuracies to the class (for the sake of simplicity?) and I wasn't trying to undermine him or anything but I cleared it up and said how it really was. Mistake on my part though because he has a bit of a grudge against me now and shows me no mercy. No matter how hard I try I can't seem to get full marks on any assignments and we did a practice test which was on stuff I already know but I only got 52%. Can anyone tell me if my answers are just badly explained or if he's marking unfairly. I'll give a few examples Q1.) What is meant by a mole of a substance? A.) A mole is a set quantity of atoms of a particular substance. I think I explained that badly I picture a mole as avagadro's number of atoms of an element or molecules of a compound. His definition is "formula mass in grams". To me thats an incomplete definition at best. Q7.) I was asked to write the electron configuration (s,p,d) of a few elements such as calcium and I accidentally wrote the wrong way around and he gave me no marks at all. Instead of writing 1S2 I wrote 2S1. I wrote the full electron configuration though so any chemistry teacher could see the answer was right it was just the layout I messed up. Q8.) I was asked to describe the various types of chemical bonds. I lost loads of marks on this one Van der Waals Bond - Weak bond caused by intermolecular forces of polar molecules (Got no marks for that one) They're the only ones that he gave me absolutely no marks for but a lot of the other ones he gave me 1 or 2 marks. The overall result was 52%. I'm gonna have to really study hard if I'm gonna have a chance of passing the real exam.