Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Insulated Cup Design
Design a cup that keeps drinks warm for longer! 🥤 Pick materials, wall structures, outer wraps, and lids, pour in 90°C water 🌡️ and check the temperature after 20 minutes. Watch the cooling curve appear right before your eyes! 📊 The "Heat Leak" tab shows if heat escapes through the sides or top — you'll discover that spending big on walls won't help without a lid! 🎯 Hit the target temperature within budget across 5 mission stages. Expensive materials aren't always best! 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.
Acids and Bases
Lemon juice or soapy water? You can't tell by looking — but add a drop of 🧪 cabbage indicator and watch the color change! Red for acid, purple for neutral, and blue-green for base. Watch two litmus papers change too! Slide the pH control from 0 to 14 to see a rainbow of colors, then take the color-guessing challenge. Experiment with 9 solutions! Supports 7 languages.