General non-science questions and class announcements.
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When considering the conformations of molecules (e.g. alkanes, alkenes, and alkynes), torsional strain is defined as the force that opposes rotation of a part of a molecule about a bond. Today, Dr. Lavelle used the analogy of a wrench as an example to demonstrate what it is similar to; think of the torque that accompanies turning a wrench and the resistance that occurs as one tightens the bolt with said wrench. Due to electron repulsion and the configuration of the conformations, torsional strain occurs as a byproduct. It is essentially resistance that occurs when rotating the atoms on opposing sides of a molecule.
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