Lesson 16 of 84 · Matter and Atoms
Lesson⭐ 30 XP🧪 Potion KitchenProperties of Materials
Matter and Atoms.
🎯 Your mission
Learn the rule. Then catch nature using it.
⚡ The twist
If it bubbles, something invisible is escaping.
Mind = Blown
💧 Hot water can freeze faster than cold water under the right conditions. Nobody fully understands why.
Make a hypothesis first
Guess: will the fizz be loud, soft, or none at all?
What You'll Learn
A compound's properties differ from its elements. Sodium is a reactive metal and chlorine is a toxic gas, but together they form sodium chloride—common table salt.
Key Words
- pH
- acid
Steps
Read about Matter and Atoms and write down three key facts.
Conduct a chromatography experiment: use a coffee filter and markers to separate the pigments in different colored inks.
Watch carefully for any changes and note the time.
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What is a solution?
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.