What is the freezing point of a substance?

Answer 1

When the temperture is to cold to bare.

Answer 2

We know the boiling point of a substance can be changed by changing the pressure on it. Higher pressures increase the B.P. and lower pressures decrease the B.P.

One example is a still that desalinates water. By heating the water a bit and decreasing the pressure as much as we can, we can get the water to boil at much less than its normal boiling point. That allows us to get the job done (run the still to desalinate water) with less energy.

Answer 3

The freezing point is the temperature at which something freezes; for water, this is 32 oF or 0 oC (note that this is also the melting point, at which solid water (ice) becomes liquid, and vice-versa (liquid to solid)). If you lower the freezing point, it will take longer for something to freeze, meaning it can get colder but also needs to be colder to freeze; this is way salt is used on roads in winter, to lower the freezing point of the water/ice so it needs to be colder than 32 F to freeze.

Answer 4

Raising the pressure above the water increases the boiling point. Adding salt to water raises it's boiling point above 100 C and lowers it's freezing point below 0 C

Answer 5

By changing either the pressure or purity of the substance.

Answer 6

Change the pressure.

Answer 7

salt

Answer 8

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