Fireworks in a glass! Such a cool & inexpensive Science Experiment for the kids!, need to be mindful of your oil/ water/food coloring ratio. Ours was too heavy the first time and turned the water black in about 2 seconds
Indoor Activities for Kids: Homemade Lava Lamps. Vegetable oil, a about of the water bottle, then water. 10 drops of food coloring. Then take a alkaseltzer tab and break it into 4 pieces. Drop one in at a time and wait for each to dissove!
Elephant Toothpaste - cup hydrogen peroxide liquid is a solution, which can be found at a beauty supply store or hair salon), 1 Tbs (one packet) of dry yeast, 3 Tbs of warm water, liquid dish washing soap and food coloring
Ed Dancing raisins activities. Lots of fun experiments. I have done this experiment, and seen the entire class become silent out of curiosity. It is a great engagement piece for a lesson, and it can be hands on if you ask for volunteers!
Cool Experiments: Exploring the Density of Liquids. Put water in a clear cup, and add oil. Add a few drops of food coloring. The food coloring floats until you add a pinch of salt, then it sinks through the oil like a lava lamp.