Lesson 66 of 84 · Chemical Reactions
Lesson⭐ 30 XP🧪 Potion KitchenSublimation (Part 2)
Chemical Reactions.
🎯 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
Sublimation happens when a solid turns directly into a gas without becoming a liquid first. Dry ice (frozen carbon dioxide) sublimes at room temperature, and mothballs slowly shrink and vanish the same way.
Key Words
Tap a word to see its definition.
Steps
Read about Chemical Reactions and write down three key facts.
Build a model of an atom using craft supplies. Show protons, neutrons, and electrons in the correct arrangement. Label each particle.
Use your senses (except taste) to describe what you notice.
Write a summary of your findings in 3-5 sentences.
Check Your Understanding
Question 1
1 of 3What are the three common states of matter?
Where you see this in real life
Your toothpaste, your soap, even your breakfast involves this.
Stretch Challenge
Try this in real life this week.
Ask a grown-up to help you mix two safe kitchen things. Predict what will happen first.
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 Chemical Reactions for 7th Grade
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