Big and Small Crystals
In science class today, we did an experiment on crystals. First, we got some ice and put them in about three quarters in the beaker. Then, we got a smaller beaker, filled one quarter of it with water and heated it until it started to boil. After that, we mixed a powder (I forgot what it is) in the boiled water until the powder dissolved. We kept on doing that pattern until the powder does not dissolve. When the powder does not dissolve, we put half of the water into one test tube and the rest into another test tube. We put one inside the ice water and the other on the test tube rack and waited for 10 minutes.
After 10minutes, we took out the test tube that was in ice and compared the two crystals. The one that was in ice had frozen faster, but only the bottom of the test tube was frozen for the test tube that was not in the ice.
In this experiment, we learned that crystals need to be formed in ice because we discussed as a class that the faster the ice freezes, the larger the crystals.