Lesson 12 of 84 · Matter

Experiment⭐ 30 XP🧪 Potion Kitchen

Freezing and Melting

🧪Lab Brief #12

Freezing and Melting.

🎯 Your mission

Predict it first. Then prove yourself right (or wrong).

⚡ The twist

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

🤯

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

cool
mixture

Materials Needed

paper towels
thermometer
strainer
ice cubes
salt
sugar

Safety First

Adult supervision recommended.
Do not taste any materials.
Wear safety goggles when mixing liquids.

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

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.

👨‍👩‍👧

For the dinner table

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

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Next Smart Experiment

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