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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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โˆ™ 2012-05-31 08:18:33
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Q: What are the boiling points and melting points of different substances?
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Related questions

Explain why the boiling point and the melting point can be used to help identify substances-?

Many substances have different melting and boiling points, thus one can use their melting and boiling points to identify them.

Why are melting points useful?

Melting points can be helpful in distinguishing different substances. Pure substances usually have a unique fixed melting point. Same goes for the boiling points.

Why do different substances have different boiling and melting points?

Because different substances have different density and chemical make up.

Can ionic substances have high or low melting points?

Generally ionic substances have high melting and boiling points.

What effect do impurities have on melting and boiling points?

Impurities can increase or decrease the melting and boiling points of substances depending on what the impurity is.

Boiling and melting points of pure substance?

The boiling and melting points of pure substances vary based on the substance. Gasses for example have lower boiling and melting points than metals.

Why boiling points and melting points can be used to identify substances?

Because they are unique to each pure substance. Different substances usually have different melting points, so determining the melting point of a substance can narrow down the possibilities for the identity of the substance. Likewise different substances usually differ in their boiling points, so boiling point can narrow down the possible identities of a substance. Although two substances can have nearly identical melting points or have nearly identical boiling points, it is extremely rare for two different pure substances to have BOTH the same melting point AND the same boiling point, so taking the two together is usually enough to uniquely identify a substance, or at the very least narrow it down to a very small list.

How do you identify solids at melting or boiling points?

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

Different substances have different boiling points?

Yes they do.

Do all liquids have the same boiling and melting point?

The boiling and melting points are very different.

Is boiling point is always same as the melting point?

Boiling and melting points are very different.

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


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