How much quantum mechanics are in quantum chemistry?

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Discussion Overview

The discussion centers on the relationship between quantum mechanics and quantum chemistry, particularly regarding the necessity of taking a quantum physics course after completing two semesters of physical chemistry. Participants explore the relevance and depth of quantum mechanics within the context of chemistry education.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions the necessity of taking quantum physics after two semesters of physical chemistry, given the limited availability of physics courses at their school.
  • Another participant notes that the content of physical chemistry courses can vary significantly, with some focusing more on thermodynamics and equilibrium without addressing quantum mechanics.
  • It is suggested that a deep understanding of quantum mechanics is not essential for most chemists unless they are working in theoretical chemistry.
  • A participant emphasizes that the topics in quantum chemistry diverge from those in a pure quantum mechanics class, depending on the individual's career goals.
  • One participant points out that while the basics of quantum mechanics are similar in both fields, the differences lie in the types of approximations used and the symmetry considerations in problems, suggesting that certain texts can serve as good introductions to quantum mechanics for chemists.

Areas of Agreement / Disagreement

Participants express differing views on the necessity and depth of quantum mechanics in relation to quantum chemistry, indicating that there is no consensus on whether taking a quantum physics course is essential after physical chemistry.

Contextual Notes

The discussion highlights variability in physical chemistry curricula and the potential lack of emphasis on quantum mechanics, which may influence the perceived necessity of further quantum physics education.

ehchandler
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So I am a chemistry major, but really like math and physics as well. I was wondering how necessary it would be to take quantum physics after taking two semesters of physical chemistry. I go to a small school and there aren't a host of physics classes, so quantum physics is the end of its road and isn't a prerequisite for any other classes, but I was wondering if it would even be worth taking after two semesters of physical chemistry. Thanks in advance.
 
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Depends on what is in the physical chemistry. I have seen physical chemistry courses that were heavy on thermodynamics, liquid/vapor equilibrium, things like viscosity, surface tension and so on, with no mentioning of quantum mechanics. Quantum chemistry was offered as a separate, required course.
 
It's nowhere near the level that the physicists do it, but as a chemists, we don't need that deep of an understanding for most of our work unless you're a theorist.
 
What do you want to do? The topics covered in a quantum chemistry or physical course generally diverge fairly quickly from a pure quantum mechanics class.
 
The basics of quantum mechanics are the same in chemistry and physics. There are very few exact solutions beyond a few simple systems like the harmonic oscillator and the hydrogen atom. So the difference between quantum chemistry and quantum physics is basically the sorts of approximations which are useful, how much symmetry there is in a problem etc. So eg. Macquarrie's quantum chemistry text is a perfectly good introduction to quantum mechanics.
 
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