Science Lab Experiment: Freezing Water
Demonstration: Freezing Water
Object: To find out which freezes faster hot or cold water.
Materials: two containers (plastic), 150 ml hot water, 150 ml cold water,
thermometer, freezer, timer
Diagram:
Method: Approximately 150 ml cold water was poured into a plastic container.
The temperature was taken and the time recorded. This container of water
was placed into the freezing compartment of the refrigerator. After some
time, this container was removed and a similar container with hot water at
a known temperature was placed into the freezing compartment.
Observations: After both containers had been in the freezer for two hours, they
were checked and it was found that the hot water container had only
ice, while the cold water container had a mixture of ice and water.
Conclusions: It was concluded that hot water freezes faster than cold water.
