<p>How much should I know about both of these classes if I want to take them?</p>
<p>I have forgotten most of my chemistry knowledge and do not remember any thing about CALC</p>
<p>When was the last time you took any of those subjects?</p>
<p>They’re both beginning-level courses. It’s not a matter of how much stuff you already know, it’s a matter of how hard you’re willing to work. But having some basic knowledge of chemistry and a decent foundation in precalculus will make your life a lot easier. There are placement tests for both. If you already took them and tested into 6A/20A, then it’s up to you to give it your best effort.</p>