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Are melting points of molecular substances higher than those of ionic substance?
Wiki User
∙ 9y ago
Ionic substances have higher melting points.
Wiki User
∙ 9y ago
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What is the effect of change in pressure in melting point?
Putting a substance under pressure increases its melting point because substances expand as they melt. Putting them under pressure makes it harder for them to expand, which means that they require more energy (heat) in order to transition from a solid state to a liquid state. If a substance is under pressure, decreasing the pressure will lower its melting point.
Does the melting point depend on the substances being melted?
Yes, because the melting point depends on the strength of the intermolecular forces, which are different for different molecules and compounds. Stronger intermolecular forces mean a higher melting point.
Why do substances with higher density have a higher boling and freezing point?
Um... who says they do? Lead has a significantly higher density than aluminum but a considerably lower melting point.
Does boiling point and melting point occur at the same temperature?
It depends on the substance and the pressure. For most substances at atmospheric pressure, the boiling point is much higher than the melting point. However, some things, like nitrogen and carbon dioxide, do not have any liquid phase at atmospheric pressure--they go directly from solid to gas and vice-versa.
Why is gold a highly malleable substance?
Gold has a high melting point due to its molecular composition. When it is mixed with other metals to create an alloy, the melting point goes even higher.
What is the effect of different masses on the same substances on the melting point?
The question isn't worded very well, so I'm not sure this is the answer to what you were trying to ask. The bulk mass of a substance has no impact whatsoever on the melting point of that substance. Covalently bonded molecules with higher molecular masses tend to have higher melting points, if the substances are roughly the "same kind of substance", which is an ill-defined term so you shouldn't put too much faith in this until you've studied chemistry enough to have developed a sort of intuition about what it means.
Why two different substances have different melting point?
It depends on the density of the substance. The higher the density, the higher the melting point and vise versa.
Why substances have different melting points?
just because accept it ok!
Higher melting point than expected?
It is indeed possible for a substance to have a higher melting point than expected. This normally happens when the substance is impure.
Which substance ionic or covalent has a higher melting point?
Generally the ionic molecules has a higher melting point.
Compared With the Melting Point Of Ionic Compounds The Melting Points Of Molecular Solids Tend To Be?
Ionic compounds have a higher melting point.
Compared with the melting points of ionic compounds the melting points of molecular solids tend to be .?
Ionic compounds have a higher melting point.
What substance has higher melting point silicon dioxide or methanol?
Silicon dioxide. Silicon dioxide silica is the mineral quartz and is a giant molecule with a melting point of over 16000C. Methanol is a molecular compound (an alcohol) with a melting point of -980C
How compared with the melting points of ionic compounds the melting points of molecular solids tend to be?
Ionic compounds have a higher melting point.
What is the difference the melting point of organic and inorganic compounds?
The melting points of organic compounds will vary and are related to the boiling points. Organic compounds that have strong cohesive forces will generally have higher melting points.
What are the melting and boiling points of different substances?
At 1atm, the melting point of H2O(water) is 0 degrees celcius and the boiling point is 100 degrees celcius. Carbon dioxide's boiling point is at -25 degrees and so its meting point. Since it crystallises and sublimates, it has no liquid form. The boiling- and melting points of elements/compounds depend on the amount of pressure exerted on the element/compound. Generally, the higher the pressure, the higher the boiling and melting points. All except for water, gallium and bismuth. These substances' melting point decreases as pressure increases.
What is the melting temperature of metal?
Melting temperature is the point where a substance is reduced to a liquid (this is the state it changes to). the usual melting point of substances is 100 degrees or higher.
