Classic chemistry experiments: disappearing ink

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.

This practical is part of our Classic chemistry experiments collection.

Ideas
Learning at home for 14–16
2020-03-31T08:46:00Z
Keep your 14–16 classes learning remotely with these curriculum-relevant resources and activities
Ideas
Learning at home for 16–18
2020-03-26T16:14:00Z
Use these curriculum-relevant resources and activities remotely with your 16–18 classes
Ideas
Learning at home for 11–14
2020-03-24T14:06:00Z
A selection of curriculum-relevant resources and activities to use remotely with your 11–14 classes

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