Water Expands When It Freezes
You will need: Water, empty screw-cap medicine or
ketchup bottle, plastic water tumbler.
When water freezes it
occupies a larger volume (space) than in its fluid state. This is easily proved
by simple experiment, carried out on a cold winter's night, or in your home
empty bottle with a screw cap. Fill the bottle to the very top with water and
then screw the cap tightly. If the temperature is below freezing, place the
filled bottle when the water outdoors in an exposed position before you go to
bed. If freezes, the icenot, place it in a loose cardboard box in your freezer,
but be sure it is standing up.
When the water in the
bottle turns into ice, what will happen? Becauseice requires more space than
water, and because the screw cap will not allow this increase in space, the
sides of the bottle will crack open. (Be very careful with the broken glass!)
For another proof, take a
plastic tumbler instead of an empty bottle and fill the tumbler to the brim
Now place the filled
tumbler in the freezing compartment of your kitchen refrigerator and allow sufficient
time for the water to freeze solid. You will find that the level of the ice is
much higher than the brim.