These interactive chemistry exercises allow the user to visualize atomic orbitals. The 3-D animations are very helpful to the beginning chemistry student. Select "Computer Graphics". Question: What is the maximum number of electrons that may occupy the "s" and "p" orbitals? Draw Bohr's model of a carbon atom on a piece of paper. (
http://www.knowledgebydesign.com/tlmc/tlmc.html
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This is an excellent introduction to carbohydrates, nucleic acids, and proteins. Question: On a piece of paper, match the monomer unit with the appropriate macromolecule: