Alka-seltzer is great if you're suffering from heartburn or an upset stomach. But you probably didn't know that it's also great if you're looking to create your own homemade lava lamp.
Because oil and water have different densities and polarities, when you mix them together, the water sinks to the bottom. When you add food coloring, which is water based, it will sink to the bottom as well.
If you crumble in an alka-seltzer tablet, it reacts with the water, causing colored droplets of water to rise to the top where they then pop, release air, and sink back to the bottom.
This creates a similar show to what you'd see in a lava lamp.
Comments