Sprinkle some salt along the thread. Wait for 30sec and lift the thread. The area where salt lands triggers melting, which cools the ice as a whole. The cooling areas without salt causes any water present to freeze, trapping the thread. Water Science, Water Fun: Great Things to Do With H2O
. This experiment caught Hui's attention but not En. And that's okay.
. This experiment caught Hui's attention but not En. And that's okay.
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