Question

A pure substance consists of single type of particles. Mixture consists of more than one kind of

pure form of matter. Mixtures can be separated by physical methods but pure substances especially

compounds cannot be separated into chemical constituents by physical methods. Pure substance has

same composition throughout. Soil and soft drinks are mixtures.

Mixtures can be separated by various methods depending upon nature of substance present in it.

Solution is a homogeneous mixture.

1) Name the process by which pure NaCl can be obtained from salt solution.

2) What are alloys-compounds or mixtures?

3) What is size of particles in solution?

4) What is solute and solvent in cold drinks?​

Answer 1

Answer:

NA2CI is the obtained from salt solution

Answer 2

Answer:

1) Pure salt can be obtained from mineral halite. Sodium chloride is obtained by mining the deposits and brine solution is obtained by passing water into the deposits. Hence the salts get dissolved then the solution is pumped out .

2) Alloys are mixtures of metals or a mixture of a metal and another element. An alloy may be a solid solution of metal elements (a homogeneous mixture) or a mixture of metallic phases (a heterogeneous mixture of two or more solutions)

3) By definition, a true solution is a homogeneous mixture of two or more substances in which substance dissolved (solute) in solvent has the particle size of less than 1 nm or 0.001 micrometers.

4) In aerated or carbonated drinks, the solvent is water and the solute(s) is carbon dioxide gas and flavorings (including a sweetener).

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