https://ptable.com/ "Ptable is a dynamic and highly interactive periodic table of the elements. It provides trends, electron configurations, and a wide range of physical and chemical property data."
MolView
https://molview.org/ "MolView is a browser-based tool for visualizing and editing molecular structures in 2D and 3D. It integrates chemical databases with interactive molecular rendering for education and research."
PhET Chemistry Simulations
https://phet.colorado.edu/en/simulations/category/chemistry "PhET provides free interactive HTML5 simulations for chemistry concepts such as reactions, equilibrium, and acids and bases. These simulations are widely used in education to build conceptual understanding."
WebElements
https://www.webelements.com/ "WebElements is a comprehensive periodic table resource maintained by Queen Mary University of London. It includes detailed information on elements, isotopes, compounds, and their properties."
Wolfram Alpha – Chemistry
https://www.wolframalpha.com/ "Wolfram Alpha is a computational knowledge engine capable of solving chemistry problems symbolically and numerically. It is commonly used for stoichiometry, equilibrium calculations, and equation balancing."
ChemTube3D
https://www.chemtube3d.com/ "ChemTube3D offers animated 3D visualizations of molecules, reactions, and laboratory techniques. It is designed primarily as a learning aid for students studying chemistry."
PubChem
https://pubchem.ncbi.nlm.nih.gov/ "PubChem is the world’s largest freely accessible chemical information database. It provides compound properties, biological activities, spectra, and powerful structure search tools."
Molecule of the Month
http://www.chm.bris.ac.uk/motm/motm.htm "Molecule of the Month is an educational website that highlights one interesting molecule at a time. Each entry explains structure, properties, and real-world relevance using accessible language and visuals."
ChemSpider
http://www.chemspider.com "ChemSpider is a free chemical structure database provided by the Royal Society of Chemistry. It offers extensive property data and advanced structure and text-based search capabilities."
NIST Chemistry WebBook
https://webbook.nist.gov/chemistry/ "The NIST Chemistry WebBook provides critically evaluated thermochemical, spectral, and physical property data. It is widely used as a trusted reference in research and industry."
LibreTexts – Chemistry
https://chem.libretexts.org/ "LibreTexts Chemistry is an open-access digital library covering general, organic, physical, and specialized chemistry topics. It is commonly used as a free alternative to traditional textbooks."
ChemCollective
https://chemcollective.org/ "ChemCollective provides virtual laboratories, simulations, and guided activities for chemistry education. The platform emphasizes conceptual understanding through interactive problem-solving."
CK-12 Chemistry
https://www.ck12.org/chemistry/ "CK-12 Chemistry offers a customizable and free online textbook for students and educators. It includes interactive exercises, simulations, and assessments aligned with curricula."
OCHeM
http://www.ochem.com/ "OCHeM is an organic chemistry resource hub focused on reaction mechanisms and conceptual explanations. It is commonly used by students preparing for exams in organic chemistry."
AACT – Classroom Simulations (Virtual Chemistry)
https://teachchemistry.org/classroom-resources/simulations "AACT provides classroom-ready chemistry simulations curated by the American Chemical Society. These resources support teaching laboratory concepts and chemical reaction dynamics."
IUPAC – Compendium & Nomenclature
https://iupac.org/ "IUPAC is the official international authority for chemical nomenclature and terminology. Its resources define standards, naming rules, and glossaries used across all fields of chemistry."