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Melting points and boiling points are phyical constants which means specific compounds have specific melting/boiling points. Therefore you can identify a substance if you determine the mp/bp. Also you measure the purity of a mixture using melting point tests.

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15y ago
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12y ago

Knowing the boiling point of a substance provides information to determine what the substance is if its unknown. If you are making a substance, checking the boiling point will let you know if you have made what you set out to make, (because impurities can mess up the boiling point)

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9y ago

The melting point of solids and boiling points of liquids are intrinsic properties and can be used to identify them. And to separate mixtures as well, as in fractional distillation.

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8y ago

Melting point is when ice (solid), for example at room temperature, turns into water (liquid). Boiling point is when the melted water is heated until it boils and starts to bubble and give off steam - getting hot enough to scald.

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9y ago

The melting point is required to test the purity of a compound. It helps to identify or characterize an unknown sample. It records new compounds to help in identification in future.

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13y ago

so you know how hot things can get before you accidentally melt them in an oven or how hot you need to get water etc. before you can use it to effectively cook food

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12y ago

Determination of the boiling point of a substance is used to determine the what the compound is and it's purity.

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6y ago

They are useful in (1) estimating the purity of a substance and (2) tentative identification of a substance.

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Lauretta Orji-Okafor

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2y ago

It helps to identify unknown substances

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Q: What is the significance of boiling point and melting point of a substance?
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What is the boiling melting and freezing point?

A boiling point is a point on the temperature scale at which a substance begins to boil. A melting point is a point on the temperature scale at which a substance freezes. Melting and boiling points are unique to different types of elements.


Will there be effect on melting or boiling point of a substance if another substance is added to it?

Yes, impurities have important effects on the melting and boiling point of materials.


How can a substance have no melting point or boiling point?

Example: compounds that are thermally decomposed before a supposed melting or boiling point.


What do boiling point and melting point have to do with the phase of matter of an element at room temperature?

The state of matter of a substance at room temperature depends on whether the melting and boiling points are above or below room temperature. At room temperature:A substance is solid if both the melting and boiling points are above room temperature.A substance is liquid if the melting point is below room temperature but the boiling point is above room temperature.A substance is a gas if both the melting point and boiling point are below room temperature.


What point does it become a liquid?

The boiling point of a substance is the point at which that substance will change between being a gas and a liquid. For example, the boiling point of water is 100oC, so water vapour will change to water at this temperature. The boiling point of Methane is -161oC, so any temperature above this, Methane will be in gas form.

Related questions

How does boiling point and melting point find a substance?

what is the melting point and boiling point of substance


What is the boiling melting and freezing point?

A boiling point is a point on the temperature scale at which a substance begins to boil. A melting point is a point on the temperature scale at which a substance freezes. Melting and boiling points are unique to different types of elements.


Will there be effect on melting or boiling point of a substance if another substance is added to it?

Yes, impurities have important effects on the melting and boiling point of materials.


How does IMF affect the boiling point or melting point of a substance?

The stronger the IMF, the higher the boiling point and the lower the melting point. The weaker the IMF, the lower the boiling point and the higher the melting point.


How can a substance have no melting point or boiling point?

Example: compounds that are thermally decomposed before a supposed melting or boiling point.


Every substance has its own melting point and what?

and boiling point


For any pure substance the boiling point and melting point will always remain?

The melting point and the boiling point of a substance are physical characteristics for each substance and are unchanged at the same pressure.


How can the melting and boiling point help you identify it?

Each pure substance has its own unique melting and boiling point.


What do boiling point and melting point have to do with the phase of matter of an element at room temperature?

The state of matter of a substance at room temperature depends on whether the melting and boiling points are above or below room temperature. At room temperature:A substance is solid if both the melting and boiling points are above room temperature.A substance is liquid if the melting point is below room temperature but the boiling point is above room temperature.A substance is a gas if both the melting point and boiling point are below room temperature.


Are melting and boiling point physical properties of a substance?

Melting and boiling points are physical properties of materials.


What does a particular point on a line of a phase diagram represent?

The melting point or boiling point ...................


A substance changes from a liquid to a gas at its melting point?

No, at its boiling point