Monday, December 7, 2015

Dangling Ice

The cold weather is here and what a better experiment than exploring with ice. The salt trucks come out in many towns to help clear the roads.  What exactly does salt do to the snow and ice?  This can be a hard concept to understand. 

1.  Get two cups.
2.  Place a thermometer in each cup.
3.  Fill the cups with ice.
4.  Place two spoonful's of salt in one cup.
5.  Watch the thermometers carefully.

With Salt went quickly down to -10 degrees celsius
Without salt went below zero, but did not drop
like the with salt.

Salt lowers the freezing point of ice.  When this happens heat is released and the temperature drops.  The ice will begin to melt because the freezing point has been lowered.

Would you like to investigate further?   Try Dangling Ice.  It makes a great class experiment for the holidays.  

Dangling Ice:  A Science Experiment for 4th, 5th, or 6th Grade
Dangling Ice:  A 2nd/3rd Grade Experiment on Freezing and

1 comment:

  1. What a fun science idea! Perfect for this time of year!