The other day I was putting some ice into a glass of water I had. I started to wonder how long it took for the ice to become ice. That made me think of how long it would take water of different temperatures to freeze.


Research question: How long would it take cold and hot water to freeze if salt and sugar were added? Which would be freeze the fastest? The tray with the cold water and salt, the cold water and sugar, the hot water and salt, or the hot water and sugar?
Materials:
Glass measuring cup
Water
Sugar
Salt
Two 16 partition ice cube trays
Spoon
Thermometer

Explanatory variable: The different amounts of salt and sugar (1tsp-8tsp) added to the hot and to the cold water.

Response variable: The time it takes to freeze the water

Procedure:
-Take a glass measuring cup and fillit with 3 cups of cold water
-Measure the temperature of the water
-Take two ice cube trays. The ice cube trays that I am using each contain 16 partitions for ice cubes.
-One of the ice cube trays will be filled with cold water. Half of the cold water tray will have cold water and salt and the other half will have cold water and sugar.
-The other tray will be filled with hot water. Half of the hot water tray will have hot water and salt and the other half will have hot water and sugar.
-Take the glass measuring cup and fill it with 3 cups of water.
-Take the temperature of the water
-Add 1teaspoon of salt and mix for 30 seconds. Then pour the salt water into one of the ice cube partitions till the partition is filled.
-Dump out the excess water and clean the glass measuring cup.
-Then add 3 cups of cold water to the glass measuring cup.
-Take the temperature of the water.
-Now add 2 teaspoons of salt and mixfor 30 seconds. Pour the salt water into another partition until it fills the partition.
-Dump out the excess water and clean the glass measuring cup.
-Add another 3 cups of cold water to the glass measuring cup.
-Take the temperature of the water.
-This procedure gets repeated until you have reached adding 8 teaspoons of salt to two cups of cold water. Now half of the cold water tray is filled.
-The other half of the ice cube trayi s reserved for the cold water and sugar.
-Repeat the procedure that was used for the cold water and salt. Except instead of using salt make sure you use sugar.You also need to reach up to adding 8 teaspoons of sugar. Just like the salt.
-Now the cold water ice cube tray is filled. Move on to the hot water ice cube tray.
-Take the glass measuring cup and fill it with two cups of hot water.
-Take the temperature of the water.
-Add 1 teaspoon of salt to the hot water. Stir for 30 seconds. Then pour the salt water into one of the ice cube partitions till the partition is full.
-Dump out the excess water and clean the glass measuring cup.
-Then add 3 cups of hot water to the glass measuring cup.
-Take the temperature of the water.
-Add 2 teaspoons of salt to the water and mix it together for 30 seconds. Pour the salt water into another partition until the partition is full.
-Dump out the excess water and clean the glass measuring cup.
-Add 3 cups of hot water to the glass measuring cup.
-Take the temperature of the water.
-Repeat this process until you have reached adding 8 teaspoons of salt to two cups of hot water. Now half of the hot water tray is filled.
-The other half of the hot water tray is for the hot water and sugar.
-Repeat the procedure that was used for the hot water and salt. Except instead of using salt make sure you use sugar. You also need to reach up to adding 8 teaspoons of sugar. Just like the salt.
-Now the hot water ice cube tray is filled.
-There are now two ice cube trays full. One tray is all cold water with half of the 16 partitions filled with salt and cold water and the other half of the 16 partitions filled with sugar and cold water. The other tray is all hot water with half of the 16 partitions filled with salt and hot water and the other half of the 16 partitions filled with sugar and hot water.
-Make sure to record all of thetemperatures so you can refer back to them.
-Place the two ice cube trays into the freezer.
-Record the temperature of thefreezer.
-Check every 15 minutes to see which tray and which side of the tray is freezing fastest.

Expected outcome: I feel that the tray that will freeze fastest will be the tray that contains the cold water and the sugar. I feel that cold water will beat out hot water because hot water will have to cool down before it can start freezing. The cold water doesn’t have to cool down as much. I feel that the sugar will beat out the salt because salt is used on roads in the winter to help melt the ice. So I feel that sugar won’t slow anything down. I also feel that there will be a negative association with a strong relationship.

AlisonP Data