Remember the purple glass of salt water that we were observing over time. ......
http://ijpatlanta.blogspot.com/2018/01/winter-experiments-in-kdh.html
The children found what was occurring with the "purple" salt water so interesting that we decided to keep the glass on the windowsill between our class and KB and wait and watch. Eventually, all the water mixed together and became purple. Salt crystals formed on top of the water line inside the glass.
One day we came in and noticed that chromatography was going on. The purple divided into blue and pink!
Wow, what would happen next?
We've been watching the glass over four and a half months.
Salt crystals formed inside and outside of the glass while almost all the water evaporated.
It is so pretty we still take out flashlights from time to time to examine the crystal and marvel at this wondrous experiment.
Morah Sara
Morah Ruth
KDH
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