190K views · 1.7K reactions | Let's play spies and learn chemistry in the process! Lemon juice invisible ink is a cool chemistry project that you can do at home. You just need to squeeze a lemon and write your secret message using juice as ink with a brush or a cotton bud. After your ink has dried on the paper, no one will be able to read the message unless they heat the paper. #TheDadLab #scienceexperiment #dadlife #scienceiscool #chemistry | TheDadLab | Facebook
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190K views · 1.7K reactions | Let's play spies and learn chemistry in t…
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Perfect invisible ink chemistry experiment! 🔬 Steps: 1. Disassemble fluorescent marker, remove refill 2. Add 4ml water to refill in cup 3. Add lemon juice until ink becomes colourless 4. Paint invisible pattern on cardboard 5. Mix 1 tsp baking soda 80ml water 6. Brush baking soda solution over dried cardboard 7. Watch your painting magically appear! ✨ The Science: This uses pH chemistry! Lemon's acid neutralizes the fluorescent ink, making it invisible. Baking soda (a base) changes the pH back
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