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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.

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10y ago

The melting point of a substance is the temperature at which the solid phase melts to become a liquid (or the liquid phase of the substance freezes to become a solid).

The boiling point of a substance is the temperature at which the liquid phase of the substance boils to becomes a gas (or the gas phase of the substance condenses to become a liquid).

These points are different for different substances.

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Q: What are the melting and boiling points of different substances?
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Related questions

How do you identify solids at melting or boiling points?

Melting and boiling points are different for each compound or element.


Do all liquids have the same boiling and melting point?

No. The melting and boiling points of liquids vary considerably.


What is the conclusion of melting and boiling point?

the conclusion is that the melting points and boiling points of various substances or chemicals are different. Some have m.p. but some don't have while some have b.p. but some don't have.it varies from chemical to chemical.


Do simple molecular substances have high or low melting and boiling points?

Yes, molecular solids have relatively low melting points.


What is mean by melting and boiling point?

Melting point & boiling point means the temp that things melt & boil. Water's freezing & melting point is 32 degrees Fahrenheit or 0 degrees Celsius. The boiling point of water is 100 degrees Celsius or 212 degrees Fahrenheit. Different liquids or substances have different melting, freezing, and boiling points.


Why do chemicals separate out in a particular order?

In fractional distillation, the substances in a mixture are heated to their boiling points. Different substances have different boiling points, so will be separated at different times. The answer to your question is simply because they have different boiling points.


Where are the boiling points and melting points of different substances?

M.P=min TEMP From where a solid begins to melt. B.P=MIN TEMP FROM WHERE( MELTED SOLID) OR LIQUID BEGINS to boil.


Why do we do disillation?

To separate substances (that have different boiling points).


Why do molecular compounds have low melting points and low boiling points relative ionic substances?

The bonds in the molecule are weaker.


How can iodine have a melting point?

All substances have melting points and boiling points. A melting point is merely the temperarture at which it changes from a solid to liquid and vice versa. The boiling point of a substance would be the temperature at which it changes from liquid to gas and vice versa.


What is the boiling point of any substance?

different substances have different boiling points, a main reference to boiling points is the boiling point of water (H2O) which is 100 degrees Celsius


How could the identify of a compound be established by melting point?

Pure substances have very specific melting (and boiling) points. Assuming the substance is pure you could measure the melting point and compare it to a known database of melting points.