BuildMolecules
Build • Visualize • LearnBuild and visualize molecules in seconds
BuildMolecules lets you create molecular structures atom by atom and understand chemical bonds in an interactive way. Perfect for students, teachers, and science enthusiasts.
BuildMolecules Main Features
Everything you need to build molecules and learn chemistry through an interactive visual experience
Drag-and-Drop Builder
Build molecules by dragging atoms from your palette into the workspace. Works smoothly with both touch and mouse controls.
Smart Chemical Bonding
Atoms form bonds automatically when they are close enough. Bonding logic follows valence rules and supports single, double, and triple bonds.
118 Atoms in 10 Categories
Explore all 118 elements organized by category: non-metals, halogens, noble gases, alkali metals, lanthanides, actinides, and more. Each atom shows its symbol, name, and valence value.
Molecule Recognition
Build compounds and identify them instantly from a database of 140+ known molecules, including water, hydrocarbons, acids, salts, and organic compounds.
Molecule Library
Browse a built-in library and load predefined molecules directly into the workspace to study or modify them.
Lewis Structure Viewer
Visualize the Lewis structure of 37 molecules with atoms, bonds, and non-bonding electron pairs clearly drawn on screen.
🔧 Build Molecules in Action
A quick look at everything you can do with Build Molecules
Who is BuildMolecules for?
Find out why students, teachers, and science enthusiasts around the world use BuildMolecules
High School and University Students
Visualize real molecules interactively while you study. Build H₂O, CO₂, glucose, and see how bonds form in seconds.
Chemistry Teachers
Show molecular structures dynamically in class. Load predefined molecules, explain bond types, and support your lessons with clear, on-screen visualizations.
Exam Preparation
Review molecular formulas and Lewis structures before exams by building molecules yourself. Learn by doing, not just memorizing.
Science Enthusiasts
Ever wondered what atoms make up sugar, caffeine, or alcohol? Build and instantly identify the molecules surrounding you every day.
Exploring the Periodic Table
With 118 elements in 10 categories, discover each atom's properties — symbol, name, and valence — and experiment with how they combine.
Self-Directed Learning
No prior knowledge required. Start with simple molecules and progress to more complex structures at your own pace, guided by the built-in library.
What hooked me was unlocking elements little by little. Every molecule you verify correctly makes you want to try the next one. Without ever meaning to study chemistry, I just can't stop until I unlock the next one.
This app has been very useful in class as I can use it on the interactive whiteboard to show how bonds and atoms combine to create molecules. The notebook is also a great idea. I recommend it as support material, as it serves as a summary to reinforce what has been learned in class.
The interface is intuitive, it runs smoothly and you can tell it's well crafted. On top of that, it's useful whether you're studying or just curious about chemistry.
I have no formal chemistry background, but I've spent hours exploring the periodic table and building molecules. It's addictive to discover that sugar is just C, H, and O combined in a specific way.
I had a chemical formula exam and had practiced so much with BuildMolecules that I felt very confident going in. Building molecules yourself is so much better than memorizing formulas.
My daughter was struggling with chemistry at school. We used BuildMolecules together and in one afternoon she understood bond types better than she had all semester. Highly recommended.
5K+
Downloads
4.62
Average Rating
140+
Recognized Molecules
118
Available Elements
Frequently Asked Questions
Everything you need to know about BuildMolecules
Yes, BuildMolecules works completely offline. You can build and visualize molecules without needing internet access. All core features are available without a connection.
Yes. The app includes a built-in library with pre-designed molecules you can explore, study, and use as a starting point for building your own structures. Perfect for learning with real-world examples.
You can build molecules using the most common elements from the periodic table, including H, C, O, N, S, P, and more. From simple molecules like water (H₂O) to more complex organic structures.
The atom palette lets you easily select elements from the periodic table to add to your molecule. Each atom is displayed with its symbol and bonding properties, making it simple and intuitive to build molecular structures.
Yes. BuildMolecules calculates and displays the molecular formula automatically as you build your molecule, following the Hill system: carbon first, then hydrogen, and then the remaining elements in alphabetical order.
BuildMolecules is perfect for high school and university students, chemistry teachers looking for a visual teaching tool, and anyone curious about how molecules work. It's educational, intuitive, and free.
Geo Catch is available in 13 languages to offer you the best user experience regardless of your geographical location. You can use the app in: Spanish, English, Arabic, German, French, Hebrew, Hindi, Indonesian, Italian, Portuguese, Tamil, Telugu, and Urdu
Ads allow us to keep Geo Catch completely free. A short video ad will be shown before exporting your locations. If you are in the European Union you can choose whether to receive personalized ads or not. You can manage your preferences at any time from the menu → 'Privacy options'.