You can use the combination to create an invisible ink that turns dark blue when the second chemical is applied. Obviously, it's cheaper to use a lemon and vinegar, but not as much fun. This is a seriously science-laden/engineering heavy table.
Showing posts with label Chemistry. Show all posts
Showing posts with label Chemistry. Show all posts
Monday, November 28, 2011
Invisible Ink
We used Eryn's Chem C2000 kit this weekend. We added ammonium iron(ii) sulfate, water, and potassium hexacyanoferrate(ii) solution to create a beautiful Prussian blue. The color, not the racist band of little girls who became liberals after a public education. Not that we wouldn't have been pleased as punch to create an anti-racist potion.
You can use the combination to create an invisible ink that turns dark blue when the second chemical is applied. Obviously, it's cheaper to use a lemon and vinegar, but not as much fun. This is a seriously science-laden/engineering heavy table.
You can use the combination to create an invisible ink that turns dark blue when the second chemical is applied. Obviously, it's cheaper to use a lemon and vinegar, but not as much fun. This is a seriously science-laden/engineering heavy table.
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