<p>Is it possible to take Chem 1A first semester and Chem 4B second semester? On the online schedule it says that Chem 4A is a prerequisite for 4B, but one of my friends told me he took 4B after 1A. Did I misunderstand him or is this possible?</p>
<p>If this is possible, how much of a shock would 4B be after 1A?</p>