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Investigation: Reactions, States, and Separation

The Bubbling Volcano

Check Your Understanding: The Volcano

Melting and Freezing

Check Your Understanding: Salted Ice

Whipping Air Into Things

Check Your Understanding: Whipped Cream

Can You Un-Mix It?

Check Your Understanding: Three Methods

Lessons 4–7: children erupt a kitchen volcano, melt and refreeze water, whip air into liquid, and separate mixtures back into their parts.

The investigation phase: children erupt a real chemical reaction, control melting and freezing, whip air into a liquid, and discover that different mixtures need different tricks to un-mix.

Reactions, Melting, and Separating

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