VerChem: Chemistry Calculator

VerChem is a comprehensive chemistry calculator for students — essential tools in one app, powered by NIST/IUPAC reference data. - Reaction Workspace — connect balancing, limiting reagents, excess and yield; check answers with unit conversion. - Explore chemistry through rotatable 3D molecules, titration controls, gas particles and orbital filling; reopen saved problem inputs. INTERACTIVE TOOLS - Full Periodic Table — 118 elements with complete properties - VSEPR Geometry — predict molecular shapes with visual diagrams - Lewis Structures — electron dot diagrams with formal charges - Compounds Database — common compounds with hazards & uses CALCULATORS - Equation Balancer — auto-balance with reaction type detection - Stoichiometry — mass, moles, molecules & percent composition - Solutions & pH — strong/weak acid-base, buffers, visual pH scale - Gas Laws — ideal, Boyle, Charles, Dalton, Van der Waals & more - Thermodynamics — Gibbs free energy, equilibrium & reaction analysis - Chemical Kinetics — rate laws, half-life & Arrhenius equation - Electrochemistry — cell potential, Nernst equation & electrolysis - Electron Configuration — orbital box diagrams with filling order LAB TOOLS - Titration — curves, equivalence point & Henderson-Hasselbalch - Nuclear Chemistry — radioactive decay, binding energy & activity - Solution Preparation — molarity, dilution & mass percent recipes - Unit Converter — temperature, pressure, mass, volume & more STUDY & REFERENCE - Calculator Guides — every calculator explains what it is, how it works, key terms and when to use it, with one-tap Try this example - Zoomable Diagrams — pinch to magnify the periodic table, molecular geometry, orbital and titration views - Formula Reference — searchable collection of essential chemistry equations, localized in your language - Quick Tool Switcher — jump between tools instantly without returning to home - Copy & Share — export any calculation result with one tap - Tablet Optimized — responsive layout for tablets WHY STUDENTS LOVE VERCHEM - Step-by-step solutions for every calculation - 100% offline — no internet required, no AI API costs - NIST/IUPAC reference element data — accurate & reliable - Dark theme designed for late-night study sessions - Calculation history — review your work anytime - Haptic feedback on every interaction - Multilingual — available in English, Japanese, Korean, Chinese, Spanish, Portuguese, French, German, Indonesian, Russian, Italian, Arabic, Hindi & Thai BUILT FOR STUDENTS From high school chemistry to university general chemistry, VerChem covers your core curriculum topics. Pay once, use forever — no subscriptions, no ads, no hidden costs. DISCLAIMER: VerChem is designed for educational purposes only. Always verify critical calculations with your instructor or official references. Not intended for professional laboratory or industrial use. Data sources: NIST Atomic Spectra Database, IUPAC 2021 Standard Atomic Weights, CODATA 2018 Physical Constants, CRC Handbook of Chemistry and Physics.