Lesson 78 of 84 · Chemical Reactions
Experiment⭐ 30 XP🧪 Potion KitchenDensity: Sink or Float? (Part 3)
Chemical Reactions.
🎯 Your mission
Predict it first. Then prove yourself right (or wrong).
⚡ 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
Density is how much mass is packed into a given volume. Objects denser than water sink, while less dense objects float. Oil floats on water because it is less dense.
Key Words
- ion
- isotope
Materials Needed
- food coloring
- plastic bottles
- balloons
- measuring cups
- paper towels
- thermometer
Safety First
- Adult supervision recommended.
- Do not taste any materials.
Steps
Read the introduction and identify the main idea of this lesson.
Conduct a chromatography experiment: use a coffee filter and markers to separate the pigments in different colored inks.
Observe what happens and describe it in detail.
Record your observations in your science journal with measurements and descriptions.
Check Your Understanding
Question 1
1 of 3What is density?
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.
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