Respuesta :

Answer:

Since the chemical composition of the substance stays the same, such as that of water in the above mentioned example, melting and boiling are physical changes. And hence, boiling points and melting points are physical properties. Since they are a property of the material, they can be used to identify it.

Explanation:

Physical properties such as melting and boiling point can be used to identify

a substance.

Every compound or substance is made up of different constituent elements

in different proportions. The presence of some type of elements signifies if

the substance will have a low/high melting point or a low/high boiling point.

A substance having a very low melting or boiling point means it is non-polar

as polar substance such as water usually have high boiling and melting

points.

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