Heating, Cooling & State Changes

FROSTFIRE LODGE · SIZZLING

Heating, Cooling & State Changes

Meltfreeze Pools

Learn with Sizzling, then use your clues in the adventure. Pause whenever you need time to read or think.

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Train more: lesson transcript and free resources

Sizzling — Heating, Cooling & State Changes Meltfreeze Pools

Hi!

I'm Sizzling.

Welcome to Meltfreeze Pools!

Will you help me investigate heating, cooling & state changes?

The Grumblies have mixed up our clues.

Let's check the evidence!

Heating can support melting or evaporation;

cooling can support freezing or condensation.

The same material can change state without becoming a different substance.

Which change is solid to liquid?

  • A. Condensation
  • B. Freezing
  • C. Melting

The answer is C: Melting

Melting is solid to liquid;

freezing is liquid to solid.

Evaporation is liquid to gas;

condensation is gas to liquid.

That clue helps us make sense of this place.

Melting is solid to liquid;

freezing is liquid to solid.

Evaporation is liquid to gas;

condensation is gas to liquid.

Which change is gas to liquid?

  • A. Evaporation
  • B. Condensation
  • C. Freezing

The answer is B: Condensation

Heating can support melting or evaporation;

cooling can support freezing or condensation.

The same material can change state without becoming a different substance.

Hmm...

how does that connect to our first clue?

Our record follows ice melting as energy enters,

then liquid freezing as energy leaves under suitable conditions.

We read model records rather than handle hot or freezing equipment.

What happens as the modeled water freezes?

  • A. Energy is transferred out
  • B. Energy must continuously enter to keep melting it
  • C. It changes into a new substance

The answer is A: Energy is transferred out

Our record follows ice melting as energy enters,

then liquid freezing as energy leaves under suitable conditions.

We read model records rather than handle hot or freezing equipment.

Nice investigating!

You've been following the evidence.

Let's bring our clues together before the adventure.

Heating can support melting or evaporation;

cooling can support freezing or condensation.

Melting is solid to liquid;

freezing is liquid to solid.

Our record follows ice melting as energy enters,

then liquid freezing as energy leaves under suitable conditions.

You're ready to explore Meltfreeze Pools with me!

Choose TRAIN MORE if you'd like another look at the clues.

Choose START ADVENTURE when you're ready.

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