<p>is it possible? does chem 1b build on material learned from chem1a exclusively?</p>
<p>if i don't take it during summer school, i'll be a year behind for chem-e.</p>
<p>i looked at the prereq for chem 1b and it said a score of 3,4,5 on ap chem.</p>
<p>i got a 4 on ap chem but that was 2 years ago so.... :S</p>