We finally did this experiment I've been wanting to try. We took a 20 ounce bottle and filled it 3/4 full with oil and then to the top with water. We then put some food coloring in, which sank to the bottom just like the water and then mixed with the water. Once the new "lava lamp" was complete, we were ready to make it work!
We broke up an Alkaseltzer (but soon discovered it works better in larger chunks) and dropped it into the bottle. It also sank to the water in the bottom, and then it started making big bubbles and really did look like a lava lamp! It was really cool! I just wish we'd had a big light to put under it to make it look more like a real lava lamp.
The best thing about this one though is that it is non-toxic and the kids got to make it themselves. Jacob loved carrying one of the bottles around (lid screwed on tightly, of course). We also discovered that the lid needs to be loose or off for the Alkaseltzer to work....it needs air!
We broke up an Alkaseltzer (but soon discovered it works better in larger chunks) and dropped it into the bottle. It also sank to the water in the bottom, and then it started making big bubbles and really did look like a lava lamp! It was really cool! I just wish we'd had a big light to put under it to make it look more like a real lava lamp.
The best thing about this one though is that it is non-toxic and the kids got to make it themselves. Jacob loved carrying one of the bottles around (lid screwed on tightly, of course). We also discovered that the lid needs to be loose or off for the Alkaseltzer to work....it needs air!
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