Lesson 72 of 84 · Matter

Lesson⭐ 30 XP🧪 Potion Kitchen

Reversible or Not? (Part 3)

🧪Lab Brief #72

Reversible or Not? (Part 3).

🎯 Your mission

Master the concept. Use it tomorrow.

⚡ The twist

Mixing two safe things doesn't always make a safe thing.

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Mind = Blown

💧 Hot water can freeze faster than cold water under the right conditions. Nobody fully understands why.

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Make a hypothesis first

Predict: will the mixture get hotter, colder, or stay the same?

What You'll Learn

Some changes can be reversed (melting ice) and some cannot (baking a cake).

Key Words

Tap a word to see its definition.

Steps

Step 1 — Read

Look at the new words. Can you say each one?

Step 2 — Do

Put an ice cube on a plate and watch it for 10 minutes. Draw what it looks like every 2 minutes.

Step 3 — Observe

Use your senses to describe what you notice.

Step 4 — Record

Write 1-2 sentences about what happened.

Check Your Understanding

Question 1

1 of 3

What happens when you mix baking soda and vinegar?

How sure are you going to be?😐 maybe

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Where you see this in real life

This is happening in your kitchen right now — every time food cooks.

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Stretch Challenge

Try this in real life this week.

Find one ingredient in a snack and look up what it does.

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

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