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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 Requisites are read from UCLA’s published wording and can be incomplete or out of date — check the official catalog listing and your department adviser before you enroll.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 20LGeneral Chemistry Laboratory

Chemistry and Biochemistry · 3 units · Undergraduate lower division (0-99)

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Use of balance, volumetric techniques, volumetric and potentiometric analysis; Beer’s law, applications for environmental analysis and materials science.

P/NP or letter grading.

When it runs

Checking the Schedule of Classes…

Requisites

Official UCLA wording

Enforced requisite: course 14A or 20A with grade of C– or better. Enforced corequisite: course 14B or 20B.

BruinTree reads · Prerequisite

confidence 1.00 · from text
grade C- or better in
  • one of
    • CHEM 14A
    • CHEM 20A

BruinTree reads · Corequisite

confidence 1.00 · from text
one of
  • CHEM 14B
  • CHEM 20B

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About CHEM 20L. We read UCLA’s requisite wording by machine, and it gets things wrong.

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Requires

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

CHEM 20L

  • CHEM 14AGeneral Chemistry for Life Scientists I
    • LIFESCI 30AMathematics for Life Scientists
    • MATH 3ACalculus for Life Sciences Students
      • MATH 1Precalculusanother path to it
    • MATH 31ADifferential and Integral Calculusanother path to it
  • CHEM 14BGeneral Chemistry for Life Scientists II
    • CHEM 14AGeneral Chemistry for Life Scientists Ianother path to it
    • CHEM 14AEGeneral Chemistry for Life Scientists I—Enhanced
      • LIFESCI 30AMathematics for Life Scientistsanother path to it
      • MATH 3ACalculus for Life Sciences Studentsanother path to it
      • MATH 31ADifferential and Integral Calculusanother path to it
    • LIFESCI 30BMathematics for Life Scientists
      • LIFESCI 30AMathematics for Life Scientistsanother path to it
    • CHEM 20AChemical Structureanother path to it
    • CHEM 20AHChemical Structure (Honors)another path to it
    • MATH 3BCalculus for Life Sciences Students
      • MATH 3ACalculus for Life Sciences Studentsanother path to it
  • CHEM 20AChemical Structure
    • MATH 31ADifferential and Integral Calculus
      • MATH 1Precalculus
  • CHEM 20BChemical Energetics and Change
    • CHEM 14AGeneral Chemistry for Life Scientists Ianother path to it
    • CHEM 14AEGeneral Chemistry for Life Scientists I—Enhancedanother path to it
    • MATH 31ADifferential and Integral Calculusanother path to it
    • CHEM 20AHChemical Structure (Honors)
      • MATH 31ADifferential and Integral Calculusanother path to it
    • MATH 31BIntegration and Infinite Series
      • MATH 31ADifferential and Integral Calculusanother path to it

4 direct requisites. The whole upstream is here — 28 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 20L6 more beyond

  • CHEM 14CLGeneral and Organic Chemistry Laboratory II
    • CHEM 192AUndergraduate Practicum in Chemistry and Biochemistryanother path to it
    • CHEM 192BUndergraduate Practicum in Chemistry and Biochemistryanother path to it
  • CHEM 30ALGeneral Chemistry Laboratory II1 more beyond
    • CHEM 30BLOrganic Chemistry Laboratory I1 more beyond
      • CHEM 30CLOrganic Chemistry Laboratory II7 more beyond
    • CHEM 114Physical Chemistry Laboratory
    • ENV HLT 401Environmental Measurements
      • ENV HLT 461Water Quality and Health
    • CHEM 114HPhysical Chemistry Laboratory (Honors)
    • CHEM 153LBiochemical Methods Ianother path to it
    • PHYSCI 166Animal Physiology1 more beyond
    • CHEM C185Materials Chemistry Laboratory
    • CHEM 192AUndergraduate Practicum in Chemistry and Biochemistryanother path to it
  • BIOENGR C105Engineering of Bioconjugates
    • BIOENGR C107Polymer Chemistry for Bioengineers
  • CHEM 153LBiochemical Methods I
    • CHEM 103Environmental Chemistry
    • CHEM C150Research Integrity and Methods in Cellular Biology, Molecular Biology, and Biochemistry Research
    • MCD BIO M170Biochemistry and Molecular Biology of Photosynthetic Apparatus
    • CHEM 154Biochemical Methods II
    • CHEM CM170Biochemistry and Molecular Biology of Photosynthetic Apparatus
    • CHEM C270Biochemistry and Molecular Biology of Photosynthetic Apparatus
  • CHEM 192AUndergraduate Practicum in Chemistry and Biochemistry
  • CH ENGR 45Biomolecular Engineering Fundamentals
    • C&S BIO M155Systems Biology: Intracellular Network Identification and Analysis
    • BIOENGR CM145Molecular Biotechnology for Engineers
    • CH ENGR C124Cell Material Interactions
    • CH ENGR CM145Molecular Biotechnology for Engineers1 more beyond
      • CH ENGR C126Viruses and Biotechnology
    • CH ENGR CM155Systems Biology: Intracellular Network Identification and Analysis
    • CH ENGR C224Cell Material Interactions
  • CHEM 192BUndergraduate Practicum in Chemistry and Biochemistry
  • EE BIOL 148Biology of Marine Plants
  • MAT SCI 104Science of Engineering Materials5 more beyond
    • C&EE C182Rigid and Flexible Pavements: Design, Materials, and Serviceability
    • MECH&AE 183AIntroduction to Manufacturing Processes3 more beyond
      • MAT SCI M297BMaterial Processing in Manufacturing
    • BIOENGR CM178Introduction to Biomaterialsanother path to it
    • MAT SCI 110Introduction to Materials Characterization A (Crystal Structure, Nanostructures, and X-Ray Scattering)1 more beyond
    • BIOENGR CM278Introduction to Biomaterials1 more beyond
    • MAT SCI 110LIntroduction to Materials Characterization A Laboratory
    • MAT SCI 120Physics of Materials6 more beyond
    • MAT SCI 122Principles of Electronic Materials Processing
  • BIOENGR C147Applied Tissue Engineering: Clinical and Industrial Perspective
  • CH ENGR 100Fundamentals of Chemical and Biomolecular Engineering
    • CH ENGR 103Separation Processes4 more beyond
      • CH ENGR 104BChemical and Biomolecular Engineering Laboratory II
    • CH ENGR 104AChemical and Biomolecular Engineering Laboratory I1 more beyond
      • CH ENGR 104BChemical and Biomolecular Engineering Laboratory IIanother path to it
    • CH ENGR 106Chemical Reaction Engineering6 more beyond
      • CH ENGR 107Process Dynamics and Control2 more beyond
  • MAT SCI CM180Introduction to Biomaterials
  • BIOENGR 167LBioengineering Laboratory
    • BIOENGR 177ABioengineering Capstone Design I
      • BIOENGR 177BBioengineering Capstone Design II
  • MAT SCI CM280Introduction to Biomaterials
  • BIOENGR CM178Introduction to Biomaterials
    • BIOENGR C179Biomaterials-Tissue Interactions
    • BIOENGR 282Biomaterial Interfaces

22 courses list this as a requisite. Showing 60 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.

  • Winter 2026
  • Spring 2026
  • Summer 2026
  • Winter 2027
  • Spring 2027

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