CHEM 20BHChemical Energetics and Change (Honors)
Chemistry and Biochemistry · 4 units · Undergraduate lower division (0-99)
Honors course parallel to course 20B.
Letter grading.
When it runs
- Winter 2026
- Winter 2027
Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.
Requisites
Official UCLA wording
Enforced requisites: course 20A and Mathematics 31A with grades of B+ or better or 20AH with grade of B or better. Enforced corequisite: Mathematics 31B.
Requires
Everything that has to come before this course, not just the courses named in the requisite above.
Unlocks
What this course is a requisite for, and what those courses lead to in turn.
CHEM 20BH
- CHEM 14CLGeneral and Organic Chemistry Laboratory II
- CHEM 30BLOrganic Chemistry Laboratory I
- EE BIOL 170Animal Environmental Physiology
- CHEM 114Physical Chemistry Laboratory
- EE BIOL 148Biology of Marine Plants
- CHEM 114HPhysical Chemistry Laboratory (Honors)
- CHEM 153LBiochemical Methods I
- 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
- ENV HLT 401Environmental Measurements
- ENV HLT 461Water Quality and Health
- CHEM C185Materials Chemistry Laboratory
- CHEM 103Environmental Chemistry
- MAT SCI 131Diffusion and Diffusion-Controlled Reactions
- MAT SCI 131LDiffusion and Diffusion-Controlled Reactions Laboratory
- MAT SCI 201Principles of Materials Science II
- MAT SCI 222Growth and Processing of Electronic Materials
- MAT SCI 223Materials Science of Thin Films
- MAT SCI 226Si-CMOS Technology: Selected Topics in Materials Science
- PHYSICS 144Polymer Physics
- CHEM 118Colloidal Dynamics Laboratory
- CHEM C123AAdvanced Thermodynamics and Statistical Mechanics with Laboratory I
- CHEM C123BAdvanced Thermodynamics and Statistical Mechanics with Laboratory II
- CHEM 151Machine Learning for Chemistry
4 courses list this as a requisite. Showing 47 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.