Objective: This experiment shows how salt lowers the freezing point of water. The salt causes the ice to melt.
The melting allows the thread to sink into a little pool of water. This water refreezes, and it traps the thread.
Pour cold ice water into a cup (w/some ice cubes)
Put one end of the thread across the top of 1 ice cube
Wait about 45 seconds and lift the string!
Sprinkle salt over the thread where it touches ice
