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Salt does not always melt the ice and snow on a road. If real salt (sodium chloride) is being used, the temperature where the salt contacts the ice and snow must be 20 F or higher for it to cause melting. On well traveled roads, the friction from the tires on the road can produce those conditions even if the temperature in general is notably lower, but there will come a temperature, especially in more northern locations, where salt will not work.
There are salt substitutes for melting snow and ice, and they work at lower temperatures. Nevertheless, temperatures can drop low enough that even they won't work.
That is one reason that highway departments often spread sand before salt or together with salt. The sand helps tires develop friction and hold the road on packed snow, and also absorbs sunlight, increasing the temperatures in the mix on the road.
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∙ 12y ago
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Can pool salt melt icy roads?
for sure
Why does salt sprinkle on ice roads cause ice to melt?
Sprinkling salt on icy roads doesn't warm up the ice. What it does is depress the freezing point of water to the point where the ice is too warm to be solid, even though it is just as cold as before.
What rock or mineral is used to melt ice on streets and sidewalks?
In the UK, it is known as rock salt. The rock salt (the dried remains of ancient seas) is an underground deposit of salt that is mined and used to grit icy roads and pavements.
Does a chemical change happen in spreading salt on icy roads?
not really
Who was the inventor of putting salt on icy roads?
some lidgit scienist who iscovered that salt lowers the melting point of ice and decided to sprkle it on roads
Can pool salt melt icy roads?
for sure
What to put on icy roads?
to melt the ice put salt
Does salt stop ice from melting?
No, salt does not stop ice from melting. In fact if the temperature is not too low it will cause ice to melt.
Why does salt sprinkled on icy roads cause the ice to melt?
Sprinkling salt on icy roads doesn't warm up the ice. What it does is depress the freezing point of water to the point where the ice is too warm to be solid, even though it is just as cold as before.
How do they get salt for icy roads out of a freshwater lake?
The salt used on icy roads in winter is quarried from underground salt deposits (salt mines), which are the remains of ancient salty seas. Salt is not extracted from fresh water.
Why does salt sprinkle on ice roads cause ice to melt?
Sprinkling salt on icy roads doesn't warm up the ice. What it does is depress the freezing point of water to the point where the ice is too warm to be solid, even though it is just as cold as before.
Why do you use salt on the icy roads?
Adding salt the freezing point of water is lowered.
What rock or mineral is used to melt ice on streets and sidewalks?
In the UK, it is known as rock salt. The rock salt (the dried remains of ancient seas) is an underground deposit of salt that is mined and used to grit icy roads and pavements.
Does a chemical change happen in spreading salt on icy roads?
not really
What is sodium chlorine use for?
Sodium chloride is salt. It is used to season food and it is used to melt ice on icy roads. I'm sure it has many other uses.
Who was the inventor of putting salt on icy roads?
some lidgit scienist who iscovered that salt lowers the melting point of ice and decided to sprkle it on roads
What happens when sand is scattered on icy roads?
The sand helps melt the ice. I did an experiment. I put three ice cubes in 1 bowl without ice. The other bowl had salt and ice. The one with salt melted the quickest.
