Question

solids and liquids can be identified from their characteristic melting and boiling point ​

Answer 1

Answer:

Explanation:

Melting point and boiling point are temperatures. The melting point and boiling point is dependant on pressure as well. Usually these temperatures are expressed related to the standard pressure of 1 atm and room temperature of 25C. Here onwards my explanations are based on standard pressure.

Melting Point

This is the temperature at which a solid become a liquid. When we increase the temperature of a solid it will become liquid at its melting point. At low temperatures than melting point the substance remain as a solid. Then from melting point temperature to boiling point the substance will remain as a liquid.

Boiling point

This is the temperature at which a liquid become a gas. When we increase the temperature of a liquid it will become gas at its boiling point. Boiling point is greater than melting point. After the boiling point the substance will remain as gas.

Now let us consider a substance where melting point is 50C and boiling point is 100C. So at room temperature or at 25C it will be a solid. Because its melting point is 50C.

Let us again consider a substance where melting point is 10C and boiling point is 50C. Not at room temperature it will be a liquid

For a substance which is having melting point -20C and boiling point -5C at room temperature it will remain as a gas because room temperature is above boiling point.

For your example;

Melting point = 0C

Boiling point = 108C

At room temperature the substance is at a temperature between melting point and boiling point. So it Will be a liquid

So the phase of a substance liquid gas or solid depends on their melting points, boiling points, room temperature and pressure.

Answer 2

Answer:

solid and liquid can be identified by the property of matters

Explanation:

properties of solid

definite shape

definite volume

no compressible

do not flow

liquid

no definite shape

definite volume

less compressible

can flow

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