Want to write secret messages that magically appear? This classic experiment lets kids create invisible ink that changes color when revealed. It feels like a magic trick, but it’s actually science at work!
Baking soda
Water
Cotton swabs or small paintbrushes
White paper
Grape juice or turmeric tea (for revealing the message)
Small bowl
Spoon
Mix 1 tablespoon baking soda with 1 tablespoon water in a small bowl. Stir until fully dissolved.
Dip a cotton swab or paintbrush into the mixture.
Write a message or draw a picture on white paper using the invisible ink.
Let the paper dry completely. Once dry, the message will disappear!
Pour grape juice into a small bowl or brew turmeric tea and let it cool.
Dip a clean paintbrush or cotton swab into the juice or tea.
Gently brush over the paper.
✨ Watch the message magically appear!
Baking soda is a base. Grape juice and turmeric tea are acidic.
When the acid touches the baking soda, a chemical reaction happens that causes the writing to change color and become visible.
Science = magic you can explain 🧪✨