Take a toothpick and a piece of sliced lemon. Dip the toothpick in the lemon and write your message in a blank paper. Now you need a little bit of heat and light to read your secret message. Light a candle and move the paper on top of the candle without burning it to ashes. It's amazing that you can read your writing. Hurry up and try it out. Leave some secret messages for your partners. P.S. send them the link of this blog as well otherwise they won't be able to read it!
Just a few normal chemicals and your lifetime toothpaste gets ready in seconds. Ingredients needed: 1. Hydrogen peroxide 2. Baking soda 3. Food coloring 4. Dish soap 5. Yeast Method One: Mix the 1/2 teaspoon 4% hydrogen peroxide and 1 teaspoon baking soda till it gets the consistency like that of toothpaste. Use it to brush your teeth and rinse it properly with water. Method Two: Take 10% hydrogen peroxide and pour a little bit of dish soap in it. Add the food colouring of your choice on the top. Mix yeast with water in a separate container and pour that into the main mixture. It reacts to form toothpaste.