Lesson 73 of 84 · Matter

Lesson⭐ 30 XP🧪 Potion Kitchen

How Thermometers Work (Part 3)

🧪Lab Brief #73

How Thermometers Work (Part 3).

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

Color changes mean atoms are rearranging — even if you can't see them.

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Mind = Blown

🌈 Every color you see is your brain inventing a translation of light frequencies.

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Make a hypothesis first

Before you mix: what color do you think it'll turn?

What You'll Learn

A thermometer measures temperature. The liquid inside goes up when it gets hotter!

Key Words

Tap a word to see its definition.

Steps

Step 1 — Read

Read the introduction. What is this lesson about?

Step 2 — Do

Mix salt into warm water and cold water. Stir 20 times each. Which dissolves faster?

Step 3 — Observe

Look for something that changed. What is it?

Step 4 — Record

Circle the correct answer on your worksheet.

Check Your Understanding

Question 1

1 of 3

Is air made of matter?

How sure are you going to be?😐 maybe

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Where you see this in real life

Your toothpaste, your soap, even your breakfast involves this.

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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.

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For the dinner table

“What's something we cook that mixes things together this way?”

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Next Smart Experiment

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

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Share this experiment

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

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