Lesson 19 of 84 · Sink and Float

Experiment⭐ 30 XP

What Happens When We Mix?

🧪Lab Brief #19

Sink and Float.

🎯 Your mission

Set it up. Test it. Be amazed.

⚡ The twist

Nature loves to surprise the careful watcher.

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Mind = Blown

🔬 The more you look, the more nature shows you.

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Make a hypothesis first

Before you start: write down what you think will happen, and why.

What You'll Learn

Mud is a mixture of dirt and water. What happens when mud dries out?

Key Words

dry
bubble

Materials Needed

baking soda
cups
spoons

Safety First

Use materials only as directed in the experiment.

Steps

Step 1 — Read

Listen carefully and repeat the new words about Sink and Float.

Step 2 — Do

Sort objects into groups: hard things and soft things.

Step 3 — Observe

Did anything change? Point to what is different.

Step 4 — Record

Point to the things you used in the activity.

Check Your Understanding

Question 1

1 of 3

Does a rock sink in water?

How sure are you going to be?😐 maybe

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Where you see this in real life

This shows up in your everyday life more than you'd think.

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Stretch Challenge

Try this in real life this week.

Try one experiment in real life this week — even a tiny one.

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For the dinner table

“What's the most surprising thing you learned today?”

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Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

⚡Share card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

🖨️

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