Watch this video tutorial to see how to make a colorful density bottle. To do this science lab experiment, you'll need food coloring, a plastic bottle, clear baby oil and extra things to put into the bottle, like glitter or sparkles.
Now, keep in mind, you can't drink this... this colorful density bottle is just for showing the difference in density between different liquids, while at the same time, making a cool paperweight.
Have an iPhone? Check out all 200+ new features coming in iOS 13.