In this video, we’ll show you how to make invisible ink using two different methods: Cobalt Chloride and Phenolphthalein. Watch step-by-step instructions on how to create secret messages that reveal themselves with heat or a chemical reaction. Learn the science behind these experiments and how invisible inks have been used in espionage, wartime communication, and more! Perfect for science enthusiasts, students, and anyone who loves fun DIY projects. Don’t forget to like, subscribe, and hit the notification bell for more exciting science experiments!
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