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SiO2 has a high melting point > 1700 degrees Celsius. This is due to the strength of Si-O-Si binds in the lattice.
Pearline Blick
Wiki User
∙ 15y agoSince Molten Metal is hot, and the utility of the mold is the space that it does not consume, the mold material has to withstand the heat of the metal without melting, losing it's shape, size etc... Since Sand Molding is done with Sand, the sand must not melt and it's physical dimensioning should remain intact.
Since sand is generally a ceramic based material it typically has a strong inter atomic bonding structure that contributes to it's ability to withstand high temperatures before breaking down. Since High Temperature is a subjective term, lets generalize that most sands have a melting point above 3000F.
Wiki User
∙ 11y agoSilica is a macromolecular (large) structure. The atoms within are all bonded to each other covalently which are very strong and therefore require high amounts of (heat) energy to break, resulting in a high melting point. Hope this helps!
Wiki User
∙ 13y agono sand is already a dust therefor not having a melting point at all
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Why might you expect silicon dioxide and carbon dioxide to have similar melting and boling points?
You Ultimately would not expect them to have similar melting and boiling points.This is because Carbon Dioxide is a gas, it might have strong covalent bonds between their atoms but between their molecules they have weak intermolecular forces, therefore these forces are easily overcome during heating in lower temperaturesHowever when you look at Silicon Dioxide, it has a macromolecular structure. In other words the whole solid is actually just one molecule which its atoms are each covalently bonded to each other. Therefore since it has strong covalent bonds between them you would expect them to have extremely high melting and boiling points.Diamond is a macromolecular structure and it has a melting point of 3006 degrees centigrade. You could expect Silicon Dioxide's melting point (and boiling point) to be similarly high.
Does chromium have a high low melting point?
high melting point
Does carbon have high melting point?
it has a low melting point
Does strontium have a high or low melting point?
High Melting Point Of Over 1000 Degrees
Does uranium have a high or low melting point?
The melting point of uranium is 1 132,2 0C; not so high.
Does silicon have a high melting point?
Yes, it has a melting point of 1683 Kelvin.
Which compound has a high melting point covalent and non metals?
A possible compound would be silicon dioxide with giant covalent structure and strong covalent bonds.
Why is silicon dioxide a suitable material for lining furnaces?
Silicon dioxide is suitable for lining furnaces because of its very high melting point of 1,600 to 1,725 degrees celcius. It is so high because of the strong intermolecular forces between SiO2 molecules in the giant covalent structure comparable to that of diamond and graphite. A large amount of energy is required to overcome these intermolecular forces and thus SiO2 has a high melting point. Note: no silicon-oxygen bonds are broken during melting, just intermolecular forces between SiO2 molecules.
What is the melting or boiling point of silicon?
the boiling point of silicon, in degrees Celsius, is between 2500 and 3645. However, the melting point, is around 1,140,40 degrees Celsius, as you may have noticed, its very high, and this is because its extremely high in oxygen.
Why does silicon have a high melting point while argon has a low melting point?
Silicon is a covalent macromolecule. Argon, on the other hand, only has weak Van der Waal's force.
Why might you expect silicon dioxide and carbon dioxide to have similar melting and boling points?
You Ultimately would not expect them to have similar melting and boiling points.This is because Carbon Dioxide is a gas, it might have strong covalent bonds between their atoms but between their molecules they have weak intermolecular forces, therefore these forces are easily overcome during heating in lower temperaturesHowever when you look at Silicon Dioxide, it has a macromolecular structure. In other words the whole solid is actually just one molecule which its atoms are each covalently bonded to each other. Therefore since it has strong covalent bonds between them you would expect them to have extremely high melting and boiling points.Diamond is a macromolecular structure and it has a melting point of 3006 degrees centigrade. You could expect Silicon Dioxide's melting point (and boiling point) to be similarly high.
Does silicon have a high or low melting point?
High because you make cakes with it so it wont melt
What happens if silicon dioxide is being heated?
Depending. When Granular Silicon Dioxide is heated, glass, is formed. (Also must be pressurized) silicon dioxide actually has a relatively high boiling point at 1650.
Why is silicon a suitable material for lining furnaces?
Silicon dioxide is suitable for lining furnaces because of its very high melting point of 1,600 to 1,725 degrees celcius. It is so high because of the strong intermolecular forces between SiO2 molecules in the giant covalent structure comparable to that of diamond and graphite. A large amount of energy is required to overcome these intermolecular forces and thus SiO2 has a high melting point. Note: no silicon-oxygen bonds are broken during melting, just intermolecular forces between SiO2 molecules.
Which mealting point is higher neons or silicons?
At STP, neon is a gas, so its melting point is low whereas silicon is a solid, so its melting point is high
Does silicon burn?
idk what u mean by "burning" it burn silicon have really high melting point so its not easy to melt it
What is the melting point of sand in Fahrenheit?
Sand is Silicon Dioxide or Silica. It's composition varies a bit, since "sand" isn't pure silica. That said, it melts at around 1650 degrees Centigrade +/- 75 degrees or so for impurities. Roughly 3000 degrees F.
