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We experimented making crystals with Empsom salt in different amounts. After reading many posts online, we decided to dissolve Epsom salt in hot water (not too hot), measuring it to be one part salt one water, and cooling quickly in the freezer. After 30 mins in the freezer, we transferred to the fridge. The simple needle crystals formed by the next day!
Everyone made batch. The green crystal here is Sweet Boy's crystal. He didn't follow my instructions, didn't do one part hot water one part salt, and a few drops of coloring. He instead mixed many parts salt to one of water to his heart content. Of course, I let him.
He left his crystal for two weeks on the counter. And when we went back to check this is what we found. He is so proud of "mi verde." He calls it "my greeny." He is so proud!
Comparing the original cubic structure of salt granules to the needle formations of our experiment. We observed that when we dissolved the magnesium sulfate (Epsom) in water, the molecules reorganized to form needles. We are using a bug-viewer, microscope, and science protecting glasses.
We loved the science fair, not because the fair was all that exciting, but because the process was even funner. We used our microscope and our bug viewers. For fun, Sweet Boy even used his science mask.
The kids drew themselves their theories, and tried to replicate the structures on the board with blocks.
It was fun to have support from family at the fair. Puma tigger's confidence grew as she explained her experiments to other great kids. Cousins rock!
It was so much fun to see our friend, winner with her popcorn experiment!
Grandma and her friend came to support too!
It was fun to get on stage and get a certificate. :)
Thanks for visiting! So tell us one of your memories from science fair!
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