Lesson 8 of 84 · Chemical Reactions
Experiment⭐ 30 XP🧪 Potion KitchenDensity: Sink or Float?
Chemical Reactions.
🎯 Your mission
Run the experiment. Find out what really happens.
⚡ 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
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
- chemical bond
Materials Needed
- baking soda
- cups
- spoons
- food coloring
- plastic bottles
- balloons
Safety First
- Keep small objects away from young children.
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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