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Melting requires energy input or absorption because liquid water has more energy than solid water.
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∙ 12y ago
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Why isn't alcohol production from biomass energy efficient?
distillation. Boiling the solution requires more energy than the energy content of the ethanol present.
What can infer about the attraction between particles in a substance with a low melting point?
The stronger the intermolecular forces, the higher the boiling point, because more kinetic energy is needed to break these intermolecular forces apart.
What occurs when a gas turns into a liqiud?
first the liquid has to be heated to its boiling point (every element has a different one) then heat makes the molecules more spaced and moving around faster (heat is energy) and it becomes a gas
Why does pulling a load up requires more effort?
it requires more energy to pull because the load is heavier than the effort.
As you go to higher elevations above sea level the boiling point of water?
as you go higher above sea level, pressure decreases. Due to the decrease in pressure, the temperature needed for water to boil is less than it is than it would be at sea level. Thus, it would take less heat energy for the bonds to break and become a gas than it would in an environment with more pressure.
What requires more energy the latent heat vaporisation of water or the latent fusion of ice?
The latent heat of vaporisation of water requires more energy. This is because on melting, the intermolecular bonds in water are only weakened whereas on boiling, the bonds are completely broken, which requires a larger amount of energy.
Why boiling point of potassium higher than its melting point?
It requires much more energy to convert the liquid potassium into a vapor than it does to convert the solid to a liquid.
The temperature at which the particles of a substance have more kinetic energy to transform is?
The melting or the boiling point.
Weak dipole-dipole forces result in a what melting point?
The stronger the bonds between molecules; the higher the melting/boiling points. This makes sense if you think about it, melting/boiling is splitting up the molecules - the stronger they are bonded the more energy you will need
Why isn't alcohol production from biomass energy efficient?
distillation. Boiling the solution requires more energy than the energy content of the ethanol present.
Does magnesium sulfate have a high melting point?
Magnesium sulfate has a high melting and boiling point, as it is made of Ionic bonds which are very strong. A lot of energy is needed to break them. So ionic compounds have high melting and boiling points. See related link for more information.
Is melting point a periodic property?
A melting point is a periodic property. Melting point is basically the amount of energy required to break chemical bonds. The more energy required, the stronger the bonds and the higher the melting point. For example, Since Ionic bonds have a transfer of electrons, it requires a lot of energy to break the bonds and has a higher melting point.
Why does a substance take longer to boil than melt?
because substances boil at a higher temperature than when it melts. therefore, boiling takes more energy than melting and more energy takes more time.
Is sodium chloride having more or less melting and boiling point?
More or less of a melting and boiling point than what? Water? Iron? Hydrogen? More information needs to be provided before this can be answered.
Why do impurities lower the boiling point of a pure substance?
The presence of the impurities will cause the boiling points to rise (also the melting points to fall). When you add the impurities, the substance doesn't remain pure affecting the boiling point to increase because now, more energy is required to boil the liquid with impurities. The melting points fall because impure substances require less energy to separate the particles.
What is the simple physical test to show that a sample of water is pure?
A scientific test you do on water similar to a chemical test
Why are the freezing melting and boiling points lower on high altitude?
Heat is only energy. In areas of low pressure, such as high altitudes, "heat" particles, which are charged electrons, escape more quickly. As more "heat" (electrons) escapes more quickly, things freeze more quickly. As far as I know melting and boiling points are higher, not lower in high altitudes.
