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Classic chemistry experiments: disappearing ink

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Learn about acid/base reactions as sodium hydroxide reacts with gas in the air to produce a solution that appears to disappear!

A blue liquid is made. This liquid is tested on a white page, it leaves a blue ink spot. In a few seconds, the blue spot disappears.

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Disappearing ink experiment, teacher handout
PDF, Size 64.54 kb
Disappearing ink experiment, student handout
PDF, Size 48.92 kb

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This practical is part of our Classic chemistry experiments collection.

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