Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Combustion & Extinction
Why do fires start and go out? 🔥 Toggle fuel, oxygen, and heat. See how missing just one element stops the fire across 8 combinations! 🧯 In the Extinguish tab, try 5 methods on paper, oil, and gas stove fires. Learn which element was removed when it goes out, or why it didn't! ⚠️ Find out why pouring water on an oil fire is dangerous. 🎯 Guess what's missing in the Challenge mode! Supports 7 languages.
Dissolution & Solutions
How much will dissolve in water? 🥄 Add salt, sugar, alum, or flour one spoonful at a time. Whatever can't dissolve settles at the bottom. Raise the 🌡️ temperature and watch it dissolve, then cool it down to see it settle again! Flour just makes the water cloudy and never dissolves — so it's not a solution. 📊 In the Temperature Comparison tab, check how salt dissolves well at 20°C but alum takes the lead when heated, and test your predictions in the 🎯 Challenge! Supports 7 languages.
Separating Mixtures
Even when mixed, substances with different properties can be separated! ⚗️ Pick a mixture and try tapping 🕸️Sieve, 🧲Magnet, ☕Filter, or 🔥Evaporation. Watch the particles actually divide into two bowls! Don't worry if a method doesn't work — it explains why (like how iron powder and sand are similar in size so a sieve won't work, and dissolved salt passes right through a filter). Compare properties in a table under 🔍 Why Separate?, and test your skills with 🎯 Challenge! Supports 7 languages.