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Which of the following is not correct?

A. Sodium and chlorine ar elements
B. Sodium chloride is a compound
C. Sodium chloride is a pure substance
D. Sodium chloride is a heterogeneous mixture
E. Sodium chloride added to water forms a solution

1 Answer

3 votes

Final answer:

The correct option is D.The statement that is not correct is that sodium chloride is a heterogeneous mixture; it is actually a compound and a pure substance.

Step-by-step explanation:

Sodium chloride, commonly known as table salt, is a compound composed of the elements sodium (Na) and chlorine (Cl). While compounds have different properties than their constituent elements, sodium chloride is indeed a pure substance, as all samples of sodium chloride are chemically identical.

Additionally, when sodium chloride is added to water, it forms a solution. A solution is a homogeneous mixture in which the solute (sodium chloride) is evenly distributed throughout the solvent (water). This compound is also a pure substance with a uniform and definite composition. When sodium chloride is added to water, it forms a homogeneous mixture or a solution, as the composition is uniform throughout. Hence, stating that sodium chloride is a heterogeneous mixture is not correct.

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