🌍 About PW Periodic World
Chemistry,
Reimagined
The most comprehensive interactive periodic table — built for students, educators, and chemistry enthusiasts worldwide.
Our Mission
PW Periodic World is designed to be the ultimate interactive chemistry reference. We provide a free, beautiful, and comprehensive periodic table that makes the building blocks of the universe accessible and engaging for everyone — from high school students to professional chemists.
Features
Everything you need to explore the elements.
⚗️
Interactive Properties
Explore 20+ physical and chemical properties with live heatmap coloring across all 118 elements.
⚛️
Electron Configurations
Visualize atomic orbitals, Bohr models, and subshell distributions with animated diagrams.
🔬
Isotopes & Decay
Browse isotope half-lives, decay modes, and abundances for every element.
🧪
Compounds Search
Drag and drop elements to instantly discover the chemical compounds they form.
📝
Chemistry MCQ Quiz
1000+ auto-generated questions from a randomly shuffled pool. Test yourself with 20-question rounds.
🌡️
Temperature States
Adjust temperature in real-time and watch elements change between solid, liquid, and gas states.
Frequently Asked Questions
Got a question? We've got answers.
How do I search for compounds?▼
Navigate to the "Compounds" tab and drag and drop elements into the designated dashed box. The system will display compounds formed by those elements.
Is PW Periodic World free to use?▼
Yes! Our platform is completely free and accessible to students and educators worldwide with no sign-up required.
Can I use Dark Mode?▼
Click the moon/sun icon in the top-right corner of the table to toggle between light and dark mode instantly.
How do I change the temperature scale?▼
In the "Properties" tab, use the temperature slider. Watch elements change state (solid/liquid/gas) in real-time as you drag it.
What is the MCQ Quiz?▼
The quiz page generates 20 random questions from a pool of 1000+ chemistry questions covering all 118 elements. You get a score and full answer review at the end.
How do I view electron configurations?▼
Click the "Electrons" tab. Click any element to see its full electron configuration, Bohr model diagram, and orbital notation.
What does the URL hash feature do?▼
The URL updates when you switch tabs — e.g. periodicworld.com/#Electrons. You can bookmark or share a specific view directly.
Can I print the periodic table?▼
Yes! Scroll to the footer and click "Print PDF". Your browser's print dialog will open. Choose "Save as PDF" for a clean printout.