if you are trying to memorize elements this method could help: try making something up like King Hecto Doesnt Mind Drinking Chocolate Milk (kilo, hecto, deka, meter, deci, centi, milli) but with the elements. i did this last year but i cant remember any of the ones i used, sorry.

anyway your teacher should help u with this hope it helped

also, for studying, go to extra help nights with your teacher and make sure you study hard every night.

i dont see how you could have studied that long and only got a C….but now you know what kind of things your teacher looks for on the test…if you need to vocab, processes, things like that.

good luck next time.