Rubber Egg: All you need is a raw egg, a jar and bottle of vinegar for this cool trick. Place your raw egg in a jar and cover it with white vinegar. After 72 hours and many bubbles later, your egg will now be rubbery. Just don’t eat it!
Turn Salt Water in to Fresh: For the older child, fill a large bowl with salt water, leaving enough room for a small empty glass to go in the middle without getting any water in it. Your salt water should be in the bowl with an empty glass in the middle. Stretch plastic wrap over the top, securing it with a rubber band or tape. Now, put something with weight on top of the plastic, just over the cup. A round rock or bar of soap will work perfectly. It needs to be heavy enough to bend the middle of the plastic wrap towards the cup inside without allowing the plastic to touch the cup or water. Place the bowl outside. The water will evaporate, stick to the top of the plastic wrap and run down the wrap in to the cup. Now, taste the water in the cup. It is fresh!
Change Flower Colors: Purchase white daisies and a container of food coloring. Put the daisies in different cups of water and color the water with food dye. See how long it takes before the daisies start to take on the color of the water.
Bubble Bomb: Do this experiment outside. Mix one cup of water with one cup of vinegar. Add food coloring for fun. Pour into a gallon size plastic ziplock bag. Take ½ cup of baking soda and place it in the middle of two paper towels. Fold the paper towels in to a square, completely sealing the baking soda in to the square. Open the plastic bag and put the paper towel in to the bag, HOLDING THE PAPER TOWEL ON THE TOP WITHOUT ALLOWING IT TO TOUCH THE LIQUID. Seal the bag while keeping the paper towel out of the liquid. Allow the paper towel to drop in and toss the bag on to the grass. See what happens, but stay clear!