Chemical Composition Pre-Test :(

I was completely lost while taking this pre-test. I didn't understand the terminology or how to do the calculations, and I noticed almost all of the questions were math computations. Last test with math computations was a little rough, so I'm going to have to prepare a little more. I also just found out this unit test is the day after I get back from Youth in Government. It's far away, but I need to make sure to keep up with my schoolwork and study in advance.

There were a lot of questions involving moles, I wish I knew 6.02 x 10^23 before I took the pre-test :(