The Artist Class challenged themselves this month to try to grow crystals in the refrigerator. We took Epsom salt, warm water, and food coloring and put this experiment to the test. After dissolving the salt into the warm water and adding our food coloring to help the crystals stand out, we put the jars into the refrigerator and waited a day for the crystals to grow. More salt can dissolve in hot water than cold, so that is why it is easier to start off with the warm water to dissolve the salt. Then, when the hot water cools in the refrigerator, the Epsom salts create crystals on the side of the cup. This is because the cold environment is not conducive for the salt to remain dissolved in the water, it only has one option: to form crystalline structures. The unique shape of Epsom salt molecules makes them form long crystals that almost look like needles!