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Practice 3. Chemical reactions , Submerge the toothpick in lemon juice. -…
Practice 3. Chemical reactions
Experiment 1. Magic ink.
Submerge the toothpick in lemon juice.
Write down a message on the paper using that toothpick (minimum three words).
Let it dry completely
Turn on the candle
Place the sheet over the fire, on the opposite side from where you wrote the message (make sure it does not burn)
Decipher the message
Experiment 2: Elephant toothpaste.
In the disposable glass mix 2 tablespoons of yeast and 3 tablespoons of water.
In the plastic bottle mix ½ cup of hydrogen peroxide, 1 tablespoon of liquid dish soap and 4 drops of food coloring.
Before you continue, place the bottle over the plastic tray.
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