Chem Tool #2 · DE Bio 101 Unit 2 · before carbon chemistry starts
Eighteen questions that find the exact spot where the chemistry stopped making sense. Fifteen minutes, one question at a time, with the reasoning after every answer.
Nothing is submitted and no score leaves this page. Your teacher does not see it. It is here so you can find out for yourself what to work on before carbon chemistry starts.
Six ideas. Three questions each. Every one of them shows up again in Unit 3, because the molecules of life are built out of exactly these rules.
A tile with a heavy outline is where to spend your time. A filled tile is one you can trust.
Checkpoint Chapter 2 on the NOVA site takes unlimited attempts and shows you the right answer after each one. Take it, work the tasks above, take it again. The second score is the one that means something.