Differentiate between heterogeneous and homogeneous mixtures with examples.
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Answer:
Explanation:
Homogeneous mixtures have only one phase of matter, be it solid, liquid or gas.
Heterogeneous mixtures have more than one phases of matter. It should be reminded here, that non - mixing liquids are not considered ‘one phase’.
For solutions in a transparent solute, like water, alcohol, white spirit, a homogeneous mixture is transparent, like the liquid in a cup of coffee. It may have colour, but you would be able to see a light through it.
A heterogeneous mixture is blurry, turbid, like when you pour some milk into the above coffee.
Gases form only homogeneous mixtures.
Solids, when mixed in the solid state even if they were very finely ground, form only heterogeneous mixtures, since you could recognize the different grains under a microscope.
An exception to this rule are alloys, which are solidified homogeneous liquid mixtures of metals, with or without other additives (like Carbon in Iron to produce steel).
Still, only microscopic analysis will show whether a truly homogeneous solid mixture has been created or whether, due to fractional crystallization of the ingredients, the solid produced is a heterogeneous mixture of the different crystals.
As an example, the latter is the case of sea water becoming ice in winter: The ice formed is not homogeneously solidified sea water, but pure ice with possible inclusions of salt crystals.
Explanation:
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