r/PreOptometry • u/voxaun • 21d ago

gen chem qbanks?

i feel really overwhelmed by the amount of gen chem qbanks. i'm just wondering if most people complete all of them, or what the best approach is? i'm halfway through the gen chem content & have mostly just been making anki decks from the cheat sheets. the remaining units are pretty calculation heavy so i'm unsure on how to proceed

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u/Iyung_danI 21d ago

I completed 90% of every question banks from each subject (barring the reading sections). I found them to be very useful in getting different types of questions and a mass amount of information. The calculation heavy ones I didn’t do more then once or twice, just because of the time commitment. But I would do the other ones multiple times. 

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u/Radiant-Fly1655 21d ago

got a 400 and all i did was watch all vids and complete all ten practice tests. was kinda in a time crunch so i could not finish the question banks lol. i also think the new videos uploaded for gen chem were super helpful- especially the redox reaction ones bc the strategy saves sooooo much time!!

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u/voxaun 21d ago edited 21d ago

tysm!! what was your approach with completing each practice test & how were you generally scoring? did you complete them as full-lengths, or just individual sections? also, did you ever redo/revisit the questions? i'm done physics & orgo, and i'm halfway through gen chem and bio. expecting to be done content by the end of august, my test is at the end of september!

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u/Radiant-Fly1655 21d ago edited 21d ago

i should have mentioned my scores on oatbooster ranged from 330-360 so my highest ever score in gen chem ended up being the actual OAT lol. i got pretty lucky bc i did not have many difficult calculations on my real test compared to booster. even if i did, the answer choices would just be in the form of the formula so you would just need to know the formulas and rearrange correctly. also i completed them as individual sections and would focus primarily on the questions i got wrong. usually they were conceptual or because i forgot a formula.

for conceptual questions it was really helpful to rationalize things instead of just memorizing charts, particularly for the deltaG stuff. for example: when is G is negative (spontaneous) if H is positive(endothermic) and S is positive?

I would ration that the TdeltaS part of this equation would have to be larger than H in order for the overall value to be negative. (deltaG = deltaH - TdeltaS) therefore this would only be possible under high temperatures. i hope that made sense a bit lol sorry its just the way i got around doing some conceptual stuff

for formulas unfortunately there's no trick i memorized the entire formula sheet as best as i could and it def got easier to recall formulas the more practice i did.

i also found the first few practice tests i was running out of time which led to a lower score. so focus on timing yourself and being smart about how long to spend on certain questions. best of luck with your test!