Uploaded November 2020 | Updated September 2026, 2 weeks ago

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This is a really fun Thanksgiving science experiment which uses cranberries to "develop" a secret message written with invisible ink.

To do the experiment you will need:
Cranberries (fresh or frozen) - about 250 mL or 1 cup
Baking soda - about 30g or 2 tbsp
Paper
Paintbrushes
Kitchenware (pot, cookie sheet, potato masher, colander, bowls)

Other Cool Experiments:
Radial Chromatography - tinyurl.com/vxurvhm
Paper Chromatography - goo.gl/kJG9X9
Burning Magnesium & Chemical Reactions - goo.gl/vLz3zu
Copper and Silver Nitrate Reaction - goo.gl/3X1YgN
Enzymes in Your Spit, Salivary Amylase - goo.gl/TcLm2B
Solubility of a Gas in a Liquid (Messy!) - goo.gl/ZqYkje
Osmosis in Red Onion Cells - goo.gl/FhVwKR
Egg Osmosis Experiment - goo.gl/r2LEyH
Firework Chemistry, Flame Tests! - goo.gl/4DEUtW
Cabbage Juice pH Indicator Lab - goo.gl/9kCiyZ
Chemical and Physical Changes Lab - goo.gl/iCztn3

Check out my website at: mrpauller.weebly.com
Image credits:
Peonidin 3-galactoside from PubChem pubchem.ncbi.nlm.nih.gov/compound/91810512#section=2D-Structure
Gall-dindi by Riki7 commons.wikimedia.org/wiki/File:Gall-dindi.jpg
Snoopy from Peanuts by Charles M. Schulz en.wikipedia.org/wiki/Snoopy#/media/File:Snoopy_Peanuts.png
Grass field - panoramio (1) by Michael A. Orlando commons.wikimedia.org/wiki/File:Grass_field_-_panoramio_(1).jpg

Music credits:
Flames by Dan Henig
Walk Through the Park by Track Tribe

Other images & videos created by Noel Pauller
"Original image by NASA/Hubble, modifications by Noel Pauller".

#onlinelearning #onlineschool #scienceexperiments