Question

alloys cannot be separated by physical means but are stiil considered as mixtures, why?

Answer 1

Alloys are mixtures but cannot be seperated by physical means is a correct statement because alloys are not pure substance to come under the tag of compound as it is not in equal proportion and as it shows the property of the substance it was made from , Example:- Brass is a composition of 70% copper and 30% zinc so it does not has equal proportion and shows the property of copper and zinc.
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Answer 2

they are considered as mixtures because it is a mixture of 2 or more metals or mixture of a metal and a non-metal