CogniGuide

Molecular Geometry Concept Map for Chemistry Students

See how VSEPR theory links electron domains to molecular shapes and bond angles. Then create a map from your own chemistry notes or PDF.

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CogniGuide at a glance

What you get: Interactive mind maps of the main ideas and how they connect. Free: overview maps (detailed maps on your first 3 creations). Plus: detailed maps with supporting concepts.
Exports: Your first PDF or PNG export is free; Plus exports anytime.
Price: Free plan: 5 creations a week, up to 3 a day. Plus: $9.99/month or $99.90/year (USD; local prices at checkout).
Sign-up: A free account is required before you create anything (Google or email). No credit card.
What you can upload: PDF, Word (.docx), PowerPoint (.pptx), plain text or Markdown, and images (PNG, JPG, WebP, GIF), or type a topic. One file per creation on the free plan; several at once on Plus.

How it compares: vs Knowt · vs Quizlet · vs NotebookLM · vs Mapify

Build Your Own Geometry Map

Turn chemistry notes into a branching map of shapes, angles and electron domains.

Map from your own notes

Upload a PDF, Word file, slides or text about VSEPR, and the AI builds the map for you.

Shapes organized by electron domains

Branches group molecules by bonding pairs and lone pairs, so the pattern is easy to see.

Quiz and flashcards from the map

Turn the map into a quiz to test shape recognition, or make flashcards from the same notes.

How to Make a Geometry Concept Map

Three steps from your chemistry material to a map you can study and quiz yourself with.

1
Add your material
Upload lecture slides or notes on VSEPR, or type the topic Molecular Geometry.
2
AI builds the map
The AI groups shapes, electron domains and bond angles into expandable branches.
3
Study, expand and quiz
Expand any shape with AI, edit labels, then turn the map into a quiz to check your recall.

Molecular Geometry Concept Map Explained

A molecular geometry concept map organizes how atoms are arranged in three dimensions. Most courses use VSEPR theory, which predicts shape from the number of electron domains around the central atom. The map splits into electron domain counts, shape families, bond angles and the effect of lone pairs.

Electron domains: bonding pairs and lone pairs around the central atom
Shape families: linear, trigonal planar, tetrahedral and beyond
Bond angles: ideal angles and how lone pairs compress them
Examples: water, ammonia, methane and carbon dioxide as reference molecules

Use the map to revise shapes before exams, then build a personalized version from your own lecture notes with CogniGuide.

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Molecular Geometry Questions

Answers about VSEPR shapes and making your own map.

What is VSEPR theory?

Valence shell electron pair repulsion theory predicts molecular shape. Electron pairs around a central atom repel each other and spread as far apart as possible, which sets the geometry and bond angles.

How do lone pairs change bond angles?

Lone pairs take up more space than bonding pairs, so they push bonded atoms closer together. Water has a bent shape with an angle near 104.5 degrees instead of the ideal tetrahedral 109.5 degrees.

Which files can I use to make a geometry map?

You can upload a PDF, Word document, PowerPoint file, text or Markdown file, or an image of your notes. You can also type the topic directly.

Can I turn the geometry map into a quiz?

Yes. Once the map is created, you can turn it into a quiz to test your recall of shapes and angles. The free plan includes 5 creations a week.