Chemistry Tools forAP Chem, Orgo & IChO
Interactive solvers and virtual labs built around the AP Chemistry curriculum and IChO syllabus. Titration curves, equilibrium, kinetics, VSEPR, IUPAC naming — all in one place, completely free.
Aligned to the AP Chem Exam
Every tool maps to a specific AP Chemistry Big Idea and Unit. Use them alongside your textbook (Zumdahl / Brown / Chang) to build real conceptual understanding — not just memorization.
IChO-Level Problem Support
The simulators go beyond AP level — coordination chemistry, crystal field theory, radial probability density, and advanced thermodynamics are all IChO exam topics. Use these to build the deep intuition that Olympiad problems demand.
Open Crystal Field Lab →- ✓Coordination Chemistry & Crystal Field Theory
- ✓Advanced Acid-Base & Buffer Equilibria
- ✓Electrochemical Cells & Nernst Equation
- ✓Quantum Numbers & Orbital Theory
- ✓Nuclear Chemistry & Decay Kinetics
- ✓Thermodynamic Calculations (ΔG, ΔH, ΔS)
All Free Chemistry Tools
Click any tool — no login, no signup required
Organic Chemistry
IUPAC Nomenclature Engine
NEWDraw any molecule → get correct IUPAC name with step-by-step rule explanation
Hydrocarbon Structure Builder
Interactive 3D builder for alkanes, alkenes, alkynes with IUPAC auto-naming
Structural Formula Viewer
Convert IUPAC names to bond-line structural formulas with substituent positions
Physical Chemistry
Titration Curve Simulator
POPULARStrong/weak acid-base, polyprotic, and redox titrations with live S-curve and equivalence point
Chemical Equilibrium Lab
ICE table solver + Le Chatelier visualizer — shift concentrations, temperature, pressure in real time
Ionic Equilibrium & Buffers
POPULARpH calculations for weak acids, bases, salts, buffer systems (Henderson-Hasselbalch)
Reaction Kinetics Simulator
First/second order kinetics, half-life, integrated rate laws, Arrhenius equation plotter
Thermodynamics Calculator
ΔG, ΔH, ΔS with Maxwell-Boltzmann distributions and Carnot cycle efficiency
Electrochemistry & Inorganic
Electrochemical Cell Simulator
Galvanic and electrolytic cells, standard reduction potentials, Nernst equation
Coordination Chemistry & Crystal Field
IChOd-orbital splitting, crystal field stabilization energy, complex geometry (IChO level)
Nuclear Decay Simulator
Alpha/beta/gamma decay chains, half-life graphing, activity and dose calculations
Quantum Chemistry & Atomic Structure
Quantum Number Explorer
Visualize n, l, ml, ms quantum numbers with real 3D orbital shape rendering
Radial Probability Density
IChOPlot ψ² radial distribution for any H-atom orbital — 1s through 4f with node visualization
Atomic Spectra & Energy Levels
Bohr model, emission spectra, electron transition energies, hydrogen line series
Molecular Structure & Bonding
Why Is Everything Free?
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