Question

Identification of some unknown substance by studying the effect of heat on them

Answer 1

Answer:

You should write the reactions first, then note the product and write their identification test.  

Explanation:

Answer 2

Answer:

Smell: Most chemists can identify solvents by their distinctive smells (though this is a pretty bad idea). ¹

Melting point: If you've got very pure crystals, you can use their melting point to figure out which of several possible chemicals you've got.

This allows substances to be identified using their specific heat. Imagine an unknown metal of known mass is heated to a known temperature. The heated metal can then be placed into a sample of water for which the volume (and therefore mass since 1mL=1g) and temperature are known.

Physical properties are those that can be determined or measured without changing the composition or identity of the substance. These properties include color, odor, taste, density, melting point, boiling point, conductivity, and hardness.

Typically, the identity of a substance can be described by a:

chemical name, for example, benzene;

number, for example, EC number 200-753-7, and.

chemical composition, for example, >99 % benzene and <1 % toluene. The composition is determined by chemical analysis.

Explanation:

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