Salt Volcano Colorful Bubbling Salt Volcano Experiment Ingredients: 1 clear glass or jar 1/2 cup vegetable oil 1/2 cup water Food coloring (any bright colors) 2–3 tablespoons salt Directions: Fill the glass halfway with water. Add several drops of food coloring and stir. Slowly pour vegetable oil on top until the glass is nearly full. The oil will float above the water. Sprinkle salt into the jar a spoonful at a time. Watch as the salt sinks through the oil, carrying droplets of colored water wi