Make Your Own Secret Ink!

Jessi has a secret message she wants to share with Squeaks, but first they’ll need to use some special ingredients to reveal it.

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SOURCES:

http://www.ucl.ac.uk/chemsea/experiments.php?exp_n=1
https://www.thoughtco.com/make-invisible-ink-with-baking-soda-602224

Categorised in: Learning