What happens when you drip a sour lemon into purple cabbage juice?

Pour something in… and it changes color. How does it know?

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This is purple cabbage juice. We have a sour lemon and slippy soap.

sour lemon slippy soap
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Two cups… the very same purple juice.

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Tap the cup to give it a happy swirl!

Tap the juice — watch it swirl around.

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We drip in the sour lemon. Will the juice turn PINK or GREEN?

Tap your guess!