How Do Epsom Salt Crystals Form?
Growing epsom salt crystals is a popular science experiment in middle schools and high schools. While watching the crystals form is entertaining, understanding how they form is very interesting as well.FeaturesEpsom salts, also known as Epsomite or magnesium sulfate, are chemical compounds that contain magnesium, sulfur and oxygen. In its common state, Epsom salts look like small grained powder; they are harvested from seawater.ProcessTo create Epsom salt crystals, hot water is added to an amount of the salt to reach the point of saturation. The hot water increases the amount of space between the molecules in the salt as it is dissolved. A string or rod may be suspended into the solution to help the crystal structure form a visual aid.EvaporationAs the water cools, the space between salt crystals decreases, causing the molecules to cling together. Over time, the water will evaporate from the solution, leaving behind solids. These solids are Epsom salt crystals.ScienceAs the water evapo
