Effectively, the salt molecules stop some of the water molecules from touching the part of the water that is becoming solid. At 32 degrees Fahrenheit, water molecules enter and leave the freezing state at an equal rate.Know More
When salt is present, however, it upsets this process, as it prevents the molecules from coming together. It is like having a handful of weak magnets. They come together easily if nothing is in between them, but if other things are present, such as marbles, the magnets have a more difficult time attracting one another.
Water with salt in it has to be colder for it to solidify. Lowering the temperature of water makes the molecules move more slowly. In time, the molecules entering and leaving the solid part of the water equal out again, as everything is moving more slowly, and it is able to freeze.Learn more about States of Matter
Vinegar lowers the freezing point of water from 32 degrees Fahrenheit down to 28 degrees Fahrenheit. When vinegar is added to water, it prevents water from freezing at its normal temperature and keeps it in liquid form.Full Answer >
When salt is added to water, it raises the boiling point, requiring the salt water to reach a higher temperature to boil. The boiling point increases as more salt is added to the water.Full Answer >
When water is frozen into ice, the change in temperature creates excess hydrogen bonds between water molecules that increase the space between the molecules. The additional space created reduces the density of the water as it freezes, making ice less dense than water. Rather than the molecules packing more tightly together and creating a heavier density, as water freezes the hydrogen bonds increase from a 3.4-molecule bond to a 4-molecule bond, which creates the excess space and reduced density in ice.Full Answer >
The freezing point of water is 32 degrees Fahrenheit, or zero degrees Celsius. The freezing temperature of water also equals the melting temperature of ice.Full Answer >