Sublimation

Lab Brief #7

🎯 Your mission

Learn the rule. Then catch nature using it.

⚡ The twist

If it bubbles, something invisible is escaping.

What you'll learn

Sublimation happens when a solid turns directly into a gas without becoming a liquid first. Dry ice (frozen carbon dioxide) sublimes at room temperature, and mothballs slowly shrink and vanish the same way.

Key words

acid
A sour-tasting chemical that can react with metals and turn litmus red.
product
A new substance made when a chemical reaction happens.

Make a hypothesis first

Guess: will the fizz be loud, soft, or none at all?

Say your guess out loud — then find out if you were right.

Step 1 of 4 · Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2 of 4 · Do

Heat ice and record the temperature every minute as it melts and then boils. Graph the temperature changes and label each phase change.

Step 3 of 4 · Observe

Observe what happens and describe it in detail.

Step 4 of 4 · Record

Record your observations in your science journal with measurements and descriptions.

Question 1 of 3

What is sublimation?

How sure are you?😐 maybe

Question 2 of 3

What happens during evaporation?

How sure are you?😐 maybe

Question 3 of 3

What happens to water when it freezes?

How sure are you?😐 maybe

Mind = blown

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

Nice work!

You got 0 of 3 right.

Next: Viscosity of Liquids All lessons

🎯

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✨ More to explore

🌍 Where you see this in real life: This is happening in your kitchen right now — every time food cooks.

🏆 Stretch challenge (try it 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?”

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