Lesson 5 of 84 · Matter and Atoms
Lesson⭐ 30 XP🧪 Potion KitchenChanging States: Evaporation
Matter and Atoms.
🎯 Your mission
Master the concept. Use it tomorrow.
⚡ The twist
Color changes mean atoms are rearranging — even if you can't see them.
Mind = Blown
🧪 If you could remove all the empty space from atoms, the entire human race would fit in a sugar cube.
Make a hypothesis first
Before you mix: what color do you think it'll turn?
What You'll Learn
Evaporation happens when liquid particles at the surface gain enough energy to escape into the air as gas. Condensation is the reverse—gas particles slow down and form liquid.
Key Words
- neutron
- electron
- ion
Steps
Study the diagram and label the parts you recognize.
Test 5 household liquids (vinegar, milk, lemon juice, baking soda water, soap) with pH paper. Classify each as acid, base, or neutral.
Draw a detailed diagram of what you observe.
Write a conclusion: what did your results show? Did they match your prediction?
Check Your Understanding
Question 1
1 of 3What happens during evaporation?
Where you see this in real life
This is happening in your kitchen right now — every time food cooks.
Stretch Challenge
Try this in real life this week.
Find one ingredient in a snack and look up what it does.
For the dinner table
“What's something we cook that mixes things together this way?”
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
Checkout complete lesson on Matter and Atoms for 7th Grade
Get the full Matter and Atoms track as a printable PDF — all lessons, worksheets, and answer keys.