Chemical Forums

Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Kongasm on July 03, 2020, 09:32:12 AM

Title: Crook ink disappearing
Post by: Kongasm on July 03, 2020, 09:32:12 AM

Crook ink that disappears within seconds After making a Signature ? -transparent
How would it be possible ?

Title: Re: Crook ink disappearing
Post by: sjb on July 03, 2020, 10:38:04 AM

Typically something like oxidation or other changes. Have a look at for instance https://www.stevespanglerscience.com/lab/experiments/secret-lemon-juice-messages/ or similar