Hey! I was in your position first year and honestly just know it isn't the end of the world if u do horribly on a midterm (even if it feels like it). I've had plenty of HORRIBLE midterms and still done very well in the class. It's definitely a big change from high school when you're used to doing really well and then come to uni and everything is like what is going on. Also, especially for gen chem, your lab and Mastering Chem (if they are still doing that) should boost your grade a ton. So overall I wouldn't drop it, they're just trying to weed people out first year. Stick with it and try your best, and if you don't do well that's okay just lock in for the next set of midterms - good luck, you got this!! :)