Science Fair Project Melting Ice

Science Fair Project
Melting Ice


Materials:

- 3 aluminum baking pans
- water to fill each pan
- 1/2 cup of salt
- 1/2 cup of rubbing alcohol
- 1/2 cup of sand
- watch
- large freezer
- thremometor

Procedure:

First fill three aluminum baking pans with water and
freeze them in alarge freezer for three hours. Then get a
thremometor to get the tempature of the freezer. Then make sure
that you put them all in for the same amount of time. Label each
ofthe aluminum baking pans A and the other B and the other C.
Then check on them every half a hour to see if they are frozen
yet. Then when they turn completly into a solid,(take them
out of the freezer) pour 1/2 cup of each subtance into a seperate
baking pan. Make sure that when you pour the subtance in pour
it evenly. Then label the pan with the name of its subtance.
Then time to see which one melts first and then second and the
last one to melt. Then record how long it took each one to
melt.


Research:

The temperature at which water forms into a solid is 32 degrees Fahrenheit or 0 degrees Celsius. The temperature 32 degrees Fahrenheit or 0 degrees Celsius is called freezing point. The freezing point is decreased by about .55 degrees Celsius or 1 degree Fahrenheit for each increase of 80 atmospheres of pressure.