What is the melting point of gravel?

Answer 1

"Gravel" does not have a melting-point.

The rock or rocks from which it is derived does - but you'd need to identify it/ them then look up the specific properies.

Answer 2

Sand and Ice Unless it's at a higher temperature that the ice, it does not. Sand lays on top of ice and allows shoes and tires more traction than bare ice, but it won't melt it unless it has some energy advantage over the ice. Ice doesn't absorb light very well - an evident fact as you can see through ice. Silicon oxide also doesn't absorb light very well - pure white sand is what we make glass out of. However the 'sand' that people put on ice isn't usually of glass quality: it has colour and opaquity therfore it absorbs light and achieves a higher temperature- which it then passes onto the ice, being in close contact with it, and melts it. By this mechanism both sand, ice and water remain at the same temperature, only the ice goes through a heat absorbing phase change. In northern areas that spread sand on the roads, there is salt also mixed in. Salt melts the ice while sand provides traction (as stated above) so it might appear that the road sand is melting the ice.

Answer 3

The sand is usually there just to give grip on the ice and the salt lowers the freezing point of the water causing it to melt.

In other words, the water becomes ice at a lower temperature.

Answer 4

the gravel absorbs heat from the sun which raises the temperature of the gravel above the freezing point which melts the ice.

Answer 5

Separation is posible after the melting of ice.

Answer 6

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