A free, interactive general chemistry course: atoms and bonds, reaction rates, energy, equilibrium and electrochemistry.
A general chemistry course in two units: atomic structure, quantum numbers and the periodic table, chemical bonding and molecular geometry, gases and reaction kinetics; then thermodynamics, free energy, chemical and phase equilibria, acids, bases and buffers, solubility and electrochemistry.
2 unités · 20 leçons · 243 questions d'entraînement · 7 langues · gratuit sur le web et sur Android
Commencer ce cours gratuitementChemistry I works through the ideas general chemistry is built on, one short lesson at a time, each followed by practice questions with instant feedback. You balance, predict and calculate rather than read.
The first unit goes from atomic models, spectra and electron configuration to periodic trends, bonding, Lewis structures, molecular geometry, hybridisation, gases and reaction kinetics. The second covers the laws of thermodynamics, enthalpy, entropy and Gibbs free energy, phase diagrams, chemical equilibrium, acids, bases and pH, buffers and titration, solubility and electrochemistry.
Toutes les explications des leçons de Chemistry I sont en lecture libre sur le web. Les questions d'entraînement et les scènes interactives sont dans l'application.
Yes. Chemistry I is free on Tryals, on the web and on Android.
2 units, 20 lessons and 243 practice questions. It is self-paced: each lesson is short, followed by questions with instant feedback, and your progress is saved across devices.
English, Catalan, German, Spanish, French, Italian and Portuguese. You can switch language inside the app.
Secondary-school science is enough. Each lesson builds on the previous one, from atomic structure onwards.
Yes — thermochemistry, equilibrium, pH and electrochemistry are practised with worked numerical questions, not only definitions.