How Does Salt Turn Into Ice Phase Change
Research
A phase change is when a substance changes from one state of matter to another. In my experiment I will be freezing water that will turn into ice and see what chemical reaction does different types of salt have on the ice.
Salt melts ice mainly because adding salt lowers the freezing point of the water. Pure water freezes at 32°F (0°C). Water with salt (or any other substance in it) will freeze at some lower temperature. The normal freezing point of water is 0 degrees Celsius, so if the temperature is above that then ice will melt.
When salt and water are mixed together, the salt dissolves, which means the salt breaks into small particles that thoroughly mix with the water. A solution made with a liquid solvent is called a liquid
solution. The temperature at which a liquid freezes (changes to a solid) is called the freezing point. A liquid solution of salt water has a lower freezing point than water alone. The greater the concentration of the salt solution, the lower its freezing point.
Bibliography
Kurlansky, Mark. Salt: A World History. New York: Penguin Books, 2003.
Churchill, E. Richard. 365 Simple Science Experiments with Everyday Materials. New York: Black Dog & Leventhal,1997.
World Book Encyclopedia I, 1991.“Changes of Phase (or State).” Zona Land Education
Science around the Year. New York: Wiley, 2000.
Hypothesis-
I hypothesize that the finer salt which is table salt, will melt the ice best, because table Salt is faster, because it 's much finer
Materials
• water
• salt Epsom salts sea salt Table salt Kosher salt
• food coloring (or watercolors or tempera psints)
steps
1.Use the tape and marker to label one of the saucers "Salt" and the other "No Salt."
2.Place one ice cube in each saucer.
3.Place the salt on the ice in the Salt saucer.
4.Place both saucers in a freezer.
5.Observe the contents of the saucer every 10 minutes for 30 or more minutes.
A phase change is when a substance changes from one state of matter to another. In my experiment I will be freezing water that will turn into ice and see what chemical reaction does different types of salt have on the ice.
Salt melts ice mainly because adding salt lowers the freezing point of the water. Pure water freezes at 32°F (0°C). Water with salt (or any other substance in it) will freeze at some lower temperature. The normal freezing point of water is 0 degrees Celsius, so if the temperature is above that then ice will melt.
When salt and water are mixed together, the salt dissolves, which means the salt breaks into small particles that thoroughly mix with the water. A solution made with a liquid solvent is called a liquid
solution. The temperature at which a liquid freezes (changes to a solid) is called the freezing point. A liquid solution of salt water has a lower freezing point than water alone. The greater the concentration of the salt solution, the lower its freezing point.
Bibliography
Kurlansky, Mark. Salt: A World History. New York: Penguin Books, 2003.
Churchill, E. Richard. 365 Simple Science Experiments with Everyday Materials. New York: Black Dog & Leventhal,1997.
World Book Encyclopedia I, 1991.“Changes of Phase (or State).” Zona Land Education
Science around the Year. New York: Wiley, 2000.
Hypothesis-
I hypothesize that the finer salt which is table salt, will melt the ice best, because table Salt is faster, because it 's much finer
Materials
• water
• salt Epsom salts sea salt Table salt Kosher salt
• food coloring (or watercolors or tempera psints)
steps
1.Use the tape and marker to label one of the saucers "Salt" and the other "No Salt."
2.Place one ice cube in each saucer.
3.Place the salt on the ice in the Salt saucer.
4.Place both saucers in a freezer.
5.Observe the contents of the saucer every 10 minutes for 30 or more minutes.