still dont get how people say chem tbh. maybe it's to do with exam boards but on mine (OCR) chem really wasn't that hard. at least for me. and I absolutely hate/am not good at maths etc too. guess it's down to people's individual adaptations to each subject.
The one you have the least interest or aptitude in.
I'm fairly certain I would never have been able to pass Business Studies due to the tedious nature of the content, and I would have struggled to scrape a pass in Spanish, despite getting a B in GCSE before my 6th form studies, because of how weak I am at language learning (which is why I swapped from SL Spanish to ab initio German after two weeks ).
So it entirely depends on you, and not others.
What is with these raft of new threads about the "easiest" or "hardest" A-level subjects? It's irrelevant. Do you like it? Good, now put your nose to the grindstone and work at it, and the fact you enjoy the subject will make it feel less like work. Don't like it? Good, don't take it. Problem solved.
The hardest A-Level will be the one that you aren't good at.. For example, I do Maths, Further Maths, Physics and Chemistry, and I find Physics quite challenging, but that doesn't make it the hardest A-Level... In my opinion, German (or any unknown foreign language for that matter) would be the hardest A-Level, because I have never learnt any German, so I'd have no clue what I'm doing.