Experiment Kit - The Secrets of Copper

With the "Eureka" experiment kit, the child will learn about the amazing properties of substances, conduct two fascinating experiments, and impress their friends.The experiment "Secret Message" demonstrates how to leave a hidden message. How to do it?Prepare a light blue solution:... mix 50 ml of warm water with half a spoon of blue crystals.Dip a cotton swab into the solution and write a secret message on ordinary paper.When the ink dries, carefully flatten the sheet of paper.Hold the letter over a candle. Follow safety precautions when handling fire and do not burn your message. Result: the solution will reveal itself when heated, and the text can be read.The experiment "Colored Flame" will show that fire burns not only with yellow flames. How to do it?Make a small cup out of foil and place it on any non-flammable surface.Pour half a spoon of blue powder onto it and moisten it with salicylic acid solution using a pipette.Ignite the moistened powder in any convenient way for you. Result: watch closely what color the flame turns!Children should conduct experiments only under adult supervision.