Do you recognize our salt crystals experiment from this post? It started off like this:
We wound up with nicer crystals in the bowl where the water evaporated than on the sponge itself; I’m not sure why. We plan to grow sugar crystals next, as soon as I get organized. We’re growing mung bean sprouts in the meantime, to healthy things out a bit!
Growing Salt Crystals
This experiment was super easy to set up – we got the instructions from this science kit for littles. We dampened the cute dog-shaped sponge with some water, and mixed one cup of water with half a cup of salt, as well as a little (well, a lot of) red food coloring. Then we poured that solution over the dog and left it sitting on our kitchen counter. We poured a little more solution in the bowl every day. I don’t understand how the crystals climbed up the edge of the bowl and even onto the underside of the rim. Can anyone explain that?
Update: we tried growing sugar crystals, and it was a huge hit with the kids! As with this salt crystal experiment, we were successful in growing crystals, but they didn’t grow quite the way we expected.
Have you ever tried growing salt crystals? How about sugar crystals? Did they turn out the way you expected?