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Course information comes from the public UCLA General Catalog. Requisites are read from UCLA’s published wording and can be incomplete or out of date — check the official catalog listing and your department adviser before you enroll.

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CHEM 113APhysical Chemistry: Introduction to Quantum Mechanics

Chemistry and Biochemistry · 4 units · Undergraduate upper division (100-199)

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Departure from classical mechanics: Schrödinger versus Newton equations; model systems: particle-in-box, harmonic oscillator, rigid rotor, and hydrogen atom; approximation methods: perturbation and variational methods; many-electron atoms, spin, and Pauli principle, chemical bonding.

P/NP or letter grading.

When it runs

Checking the Schedule of Classes…

Requisites

Official UCLA wording

Requisites: course 20B, Mathematics 32A, 32B, 33A, Physics 1A, 1B, and 1C, or 1AH, 1BH, and 1CH, or 5A, 5B, and 5C, or 6A, 6B, and 6C, with grades of C– or better.

BruinTree reads · Prerequisite

needs reviewconfidence 0.45 · from text
grade C- or better in
  • one of
    • all of
      • CHEM 20B
      • MATH 32A
      • MATH 32B
      • MATH 33A
      • PHYSICS 1A
      • PHYSICS 1B
      • PHYSICS 1C
    • all of
      • PHYSICS 1AH
      • PHYSICS 1BH
      • PHYSICS 1CH
    • all of
      • PHYSICS 5A
      • PHYSICS 5B
      • PHYSICS 5C
    • all of
      • PHYSICS 6A
      • PHYSICS 6B
      • PHYSICS 6C
  • · "PHYSICS 6A" is not in this catalog version
  • · "PHYSICS 6B" is not in this catalog version
  • · "PHYSICS 6C" is not in this catalog version
  • · mixed comma-level AND/OR in "course 20B, Mathematics 32A, 32B, 33A, Physics 1A, 1B, and 1C, or 1AH, 1BH, and 1CH, or 5A, 5B, and 5C, or 6A, 6B, and 6C" — grouping is a best reading

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Requires

Everything that has to come before this course, not just the courses named in the requisite above.

CHEM 113A

  • CHEM 20BChemical Energetics and Change
    • CHEM 14AGeneral Chemistry for Life Scientists I
      • LIFESCI 30AMathematics for Life Scientistsanother path to it
    • CHEM 14AEGeneral Chemistry for Life Scientists I—Enhanced
      • LIFESCI 30AMathematics for Life Scientistsanother path to it
    • MATH 31ADifferential and Integral Calculusanother path to it
    • CHEM 20AChemical Structure
      • MATH 31ADifferential and Integral Calculusanother path to it
    • CHEM 20AHChemical Structure (Honors)
    • MATH 31BIntegration and Infinite Seriesanother path to it
  • MATH 32ACalculus of Several Variables
    • MATH 31ADifferential and Integral Calculus
      • MATH 1Precalculus
  • PHYSICS 1APhysics for Scientists and Engineers: Mechanics
    • MATH 31ADifferential and Integral Calculusanother path to it
    • MATH 31BIntegration and Infinite Seriesanother path to it
    • MATH 32ACalculus of Several Variablesanother path to it
  • MATH 32BCalculus of Several Variables
    • MATH 31BIntegration and Infinite Series
      • MATH 31ADifferential and Integral Calculusanother path to it
    • MATH 32ACalculus of Several Variablesanother path to it
  • PHYSICS 1AHPhysics for Scientists and Engineers: Mechanics (Honors)
    • MATH 31ADifferential and Integral Calculusanother path to it
    • MATH 31BIntegration and Infinite Seriesanother path to it
    • MATH 32ACalculus of Several Variablesanother path to it
  • MATH 33ALinear Algebra and Applications
    • MATH 3BCalculus for Life Sciences Students
      • MATH 3ACalculus for Life Sciences Studentsanother path to it
    • MATH 31BIntegration and Infinite Seriesanother path to it
    • MATH 32ACalculus of Several Variablesanother path to it
  • PHYSICS 1BPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fields
    • MATH 31BIntegration and Infinite Seriesanother path to it
    • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
    • MATH 32ACalculus of Several Variablesanother path to it
  • PHYSICS 1BHPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fields (Honors)
    • MATH 31BIntegration and Infinite Seriesanother path to it
    • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
    • MATH 32ACalculus of Several Variablesanother path to it
  • PHYSICS 1CPhysics for Scientists and Engineers: Electrodynamics, Optics, and Special Relativity
    • MATH 32ACalculus of Several Variablesanother path to it
    • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
    • MATH 32BCalculus of Several Variablesanother path to it
  • PHYSICS 1CHPhysics for Scientists and Engineers: Electrodynamics, Optics, and Special Relativity (Honors)
    • MATH 32ACalculus of Several Variablesanother path to it
    • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
    • MATH 32BCalculus of Several Variablesanother path to it
    • MATH 33BDifferential Equations
      • MATH 31BIntegration and Infinite Seriesanother path to it
  • PHYSICS 5APhysics for Life Sciences Majors: Mechanics and Energy
    • LIFESCI 30AMathematics for Life Scientists
    • MATH 3ACalculus for Life Sciences Students
      • MATH 1Precalculusanother path to it
    • LIFESCI 30BMathematics for Life Scientists
      • LIFESCI 30AMathematics for Life Scientistsanother path to it
    • MATH 3BCalculus for Life Sciences Studentsanother path to it
    • MATH 3COrdinary Differential Equations with Linear Algebra for Life Sciences Students
  • PHYSICS 5BPhysics for Life Sciences Majors: Thermodynamics, Fluids, Waves, Light, and Optics
    • PHYSICS 5APhysics for Life Sciences Majors: Mechanics and Energyanother path to it
  • PHYSICS 5CPhysics for Life Sciences Majors: Electricity, Magnetism, and Modern Physics
    • PHYSICS 5APhysics for Life Sciences Majors: Mechanics and Energyanother path to it

13 direct requisites. The whole upstream is here — 60 courses over 3 levels. Every course here opens its own tree.

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

CHEM 113A10 more beyond

  • CHEM 110BTopics in Physical Chemistry2 more beyond
    • CHEM 114Physical Chemistry Laboratoryanother path to it
    • CHEM 114HPhysical Chemistry Laboratory (Honors)another path to it
    • CHEM C115AAdvanced Quantum Chemistry with Laboratory Ianother path to it
    • CHEM 118Colloidal Dynamics Laboratory
    • CHEM 121Special Topics in Physical Chemistry
    • CHEM C215AAdvanced Quantum Chemistry with Laboratory I
      • CHEM C215BAdvanced Quantum Chemistry with Laboratory II1 more beyond
    • CHEM C223AAdvanced Thermodynamics and Statistical Mechanics with Laboratory I
      • CHEM C223BAdvanced Thermodynamics and Statistical Mechanics with Laboratory IIanother path to it
      • CH ENGR 201Methods of Molecular Simulation
    • CHEM C223BAdvanced Thermodynamics and Statistical Mechanics with Laboratory II
      • CHEM M223CNonequilibrium Statistical Mechanics and Molecular Biophysics
      • PHYSICS M215DNonequilibrium Statistical Mechanics and Molecular Biophysics
  • CHEM C113BQuantum Chemistry Methods
    • CHEM 114HPhysical Chemistry Laboratory (Honors)another path to it
  • MAT SCI 120Physics of Materials
    • MAT SCI 121Materials Science of Semiconductors
      • MAT SCI 121LMaterials Science of Semiconductors Laboratory
    • MAT SCI 200Principles of Materials Science I
      • MAT SCI 226Si-CMOS Technology: Selected Topics in Materials Science
      • MAT SCI 271Electronic Structure of Materials
      • MAT SCI 272Theory of Nanomaterials
    • MAT SCI 221Science of Electronic Materials
      • MAT SCI 226Si-CMOS Technology: Selected Topics in Materials Scienceanother path to it
    • MAT SCI 222Growth and Processing of Electronic Materials
      • MAT SCI 226Si-CMOS Technology: Selected Topics in Materials Scienceanother path to it
    • MAT SCI 223Materials Science of Thin Films
    • MAT SCI 225Materials Science of Surfacesanother path to it
  • CHEM 114Physical Chemistry Laboratory
  • CHEM 114HPhysical Chemistry Laboratory (Honors)
  • MAT SCI 225Materials Science of Surfaces
  • CHEM C115AAdvanced Quantum Chemistry with Laboratory I
    • CHEM C115BAdvanced Quantum Chemistry with Laboratory IIanother path to it
  • CHEM C115BAdvanced Quantum Chemistry with Laboratory II
    • CHEM C115CAdvanced Quantum Chemistry: Applicationsanother path to it
  • CHEM C115CAdvanced Quantum Chemistry: Applications
  • CHEM C123AAdvanced Thermodynamics and Statistical Mechanics with Laboratory I
    • CHEM C123BAdvanced Thermodynamics and Statistical Mechanics with Laboratory IIanother path to it
  • CHEM C123BAdvanced Thermodynamics and Statistical Mechanics with Laboratory II
  • CHEM C126AComputational Methods for Chemists
  • CHEM C143AStructure and Mechanism in Organic Chemistry
    • CHEM C143BMechanism and Structure in Organic Chemistry
  • CHEM C145Theoretical and Computational Organic Chemistry
  • CHEM C175Inorganic Reaction Mechanisms

29 courses list this as a requisite. Showing 45 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.

  • Fall 2025
  • Spring 2026
  • Fall 2026
  • Spring 2027

Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.