Chemistry is one of the harder subjects to self-teach from video alone, for a specific reason: it is unusually quantitative for a subject that also requires genuine conceptual intuition. You can watch an excellent explanation of why ionic bonds form and still be unable to calculate a limiting reagent, because those are different skills, and chemistry courses fail students who develop only one of them.
This guide is a staged roadmap through chemistry using free YouTube content — from your first balanced equation through organic chemistry mechanisms and into the physical chemistry that requires calculus. It names specific channels at each stage and, more importantly, covers how to convert conceptual video content into the calculation fluency that chemistry exams actually test.
For the full, detailed review of every major chemistry YouTube channel, see best YouTube channels for chemistry — this guide focuses on sequencing: what to watch in what order, and how to know when you are ready to move on.
Stage 0: Why Chemistry Trips People Up Before It Even Gets Hard
Most early chemistry struggle is not a chemistry problem — it is an unstated-prerequisite problem. Stoichiometry, the calculation backbone of general chemistry, is really just unit conversion and ratio reasoning wearing a chemistry costume. Students who are shaky on basic algebra and dimensional analysis will struggle with the mole concept not because moles are conceptually hard, but because the arithmetic scaffolding underneath is missing.
Before starting general chemistry in earnest, confirm you are comfortable with: converting between units using conversion factors, working with scientific notation and significant figures, and basic algebraic manipulation of equations (solving for a variable that is not isolated). If any of these feel shaky, spend a week on Khan Academy's pre-algebra or algebra units before starting chemistry content — it will save far more time than it costs.
Stage 1: General Chemistry Foundations
Primary resource: Tyler DeWitt. DeWitt's channel is the best starting point specifically because it builds the conceptual "why" before the calculation "how" — his treatment of the mole concept, stoichiometry, and atomic structure fixes the specific failure mode where students memorize a calculation procedure without understanding what it represents. Watch his stoichiometry and mole-concept videos before attempting any stoichiometry problems from a textbook or course.
Supplement with Crash Course Chemistry for a fast survey of the full general chemistry landscape — atomic structure, periodic trends, bonding, thermodynamics, electrochemistry — before your course or self-study plan goes deep on each topic. Watching the relevant Crash Course episode before a unit begins means you arrive already knowing the vocabulary and the rough shape of what is coming.
Drill with Khan Academy's exercises, not just its videos. This is the step most self-learners skip, and it is the one that actually builds calculation fluency. Khan Academy's stoichiometry, acid-base, thermodynamics, and equilibrium exercise sets provide immediate feedback with unlimited practice problems — work through a unit's exercises until you can solve problems without hints, not just until you get one right.
Milestones before moving on: Can you balance a chemical equation and use it to calculate limiting reagent and percent yield without referencing a formula sheet? Can you convert between moles, mass, and particles fluently? Can you explain, in your own words, what a mole represents and why the concept exists?
Stage 2: Organic Chemistry
Organic chemistry is where most students' relationship with chemistry changes — for better or worse — because it shifts from calculation-heavy to mechanism-heavy. You are no longer solving for a number; you are predicting how electrons move and what product results.
Professor Dave Explains has the most complete free organic chemistry course sequence on YouTube, covering nomenclature, functional groups, and reaction mechanisms across a full playlist that maps reasonably well onto a two-semester university organic chemistry sequence. His whiteboard-based, methodical style is well suited to mechanism-heavy content where the sequence of steps matters as much as the destination.
NileRed, while not instructional in a step-by-step sense, is worth adding here specifically because organic chemistry can start to feel abstract — arrows and electron pushing on a whiteboard, disconnected from anything real. Watching NileRed's actual laboratory synthesis videos alongside your mechanism study grounds the abstract notation in real chemistry: the reactions you are drawing arrows for are things that actually happen, with real yields, real byproducts, and real failure modes.
The specific study technique that works for mechanisms: do not just watch a mechanism being drawn. Pause the video before the electron-pushing arrows are drawn, predict where they should go based on the reagents shown, then unpause and check. This converts a passive-viewing mechanism explanation into active retrieval practice — the same principle behind active recall techniques applied specifically to reaction mechanisms.
Milestones before moving on: Can you predict the product of a reaction given the reagents and a functional group you have studied, without looking up the mechanism? Can you name a molecule from its structure and draw a structure from its name? Do you understand why a mechanism proceeds the way it does (electron-pushing logic), not just that it does?
Stage 3: Physical Chemistry
Physical chemistry — quantum chemistry, thermodynamics at a rigorous level, statistical mechanics, spectroscopy — is the least-served stage on YouTube, mostly because it requires calculus and differential equations as prerequisites, which shrinks both the creator pool and the audience.
MIT OpenCourseWare's 5.61 Physical Chemistry lectures are the most complete free resource, covering quantum mechanics applied to atoms and molecules, molecular spectroscopy, and statistical mechanics with the full rigor of an MIT course, including problem sets and exams that let you self-assess against a real university standard.
If your calculus is not yet solid enough for physical chemistry, stop and build that foundation first rather than pushing through physical chemistry content you cannot follow mathematically — see how to learn calculus from YouTube for a complete roadmap through the calculus prerequisites (derivatives, integrals, and partial derivatives in particular) that physical chemistry assumes.
Milestones for this stage are course-dependent — physical chemistry is where self-study starts to resemble upper-division university coursework, and "finishing" it means being able to work MIT-level problem sets independently, not just following the lecture derivations.
How to Take Notes Across All Three Stages
Chemistry note-taking needs differ meaningfully by stage. For general chemistry's conceptual videos (Tyler DeWitt, Crash Course), write down the underlying model being taught, not just the final formula — what does the concept represent, and what would change if a variable changed. For organic chemistry mechanisms, redraw the mechanism yourself after watching, from memory, before checking your version against the video. For physical chemistry's derivation-heavy content, work through the algebra yourself line by line rather than accepting the instructor's derivation at face value — physical chemistry rewards the ability to rederive a result, not just recognize it.
Across all three stages, the failure mode is the same: watching without doing produces recognition, not the calculation or mechanism fluency that exams actually test. For a complete system for converting video-watching into durable study materials, see the AI study notes complete guide and take notes from a YouTube lecture.
How Long Does This Take?
For a self-learner studying 10–12 hours per week: general chemistry foundations take roughly 10–14 weeks to reach solid calculation fluency, organic chemistry (one full academic year's worth of content, typically split into two semesters at a university) takes 20–28 weeks, and physical chemistry — given the calculus prerequisite is already solid — takes another 12–16 weeks for a first pass at MIT 5.61-level content.
This is a genuinely long roadmap, on par with the university timeline it mirrors. The advantage of the self-directed YouTube route is not speed — it is that you control which parts get more time. Most self-learners find general chemistry stoichiometry and organic chemistry mechanisms are the two places that need the most additional problem-solving time beyond what any video series provides, regardless of how good the instruction is.
Chemistry rewards the students who convert what they watch into what they can calculate and predict from scratch. The channels above are genuinely excellent — the discipline of pairing every video with independent problem-solving is what turns that instruction into chemistry knowledge that holds up on an exam.
Turn your chemistry lecture notes into flashcards and structured study material automatically. Try Notiq free at notiq.study — import any YouTube chemistry lecture and get organized chapter notes with exam-ready flashcards in minutes.
