A solution is a ______ mixture of two or more substances.

Question

Question

This question was previously asked in

NVS Staff Nurse Previous Year Paper [Held on 12 January 2018]

Answer 1

The correct answer is homogeneous.

Key Points

Homogeneous Solution	Heterogeneous solution
The composition is uniform throughout the mixture. It is the same at every point.	The composition is NOT uniform throughout the mixture. It varies from point to point.
Components are not visible to the naked eye.	Components may be visible to the naked eye.
The whole mixture is in the same phase.	Substances have different phases which may get separated into multiple layers.
Components cannot be separated easily.	Components can be separated easily.

Important Points

A Homogeneous mixture has the same proportion of its compound in a sample.
- Sugar in water is a homogeneous mixture.
A Heterogeneous mixture has a different proportion of its compound in a sample.
A Mixture in which a solute particle does not dissolve, but gets suspended is a suspension.
A solution in which the substances are regularly suspended in a fluid is a Colloidal Solution.
A true solution is a homogeneous mixture of two or more substances in which the substance dissolved in the solvent has a particle size of less than 10-9 m or 1 nm.

Mistake Points

Ice cubes in cola: Ice can be physically separated from cola when it is in a mixture.
Once the ice melts in the cola, it can no longer be separated, thus it is no longer a mixture.
So ice in cola is a heterogeneous solution.

Confusion Points

Sugar and water can be separated by removing the water from the solution using the distillation process.

Additional Information

Mixture: Two or three compounds that are not fused chemically, and have no physical interactions.
Solution: Two substances are chemically mixed to form a new compound.