1)what is alloy
2)what is meant by pure substances
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1) a metal made by mixing two types of metal together.
2)A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen
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An alloy is a mixture or metallic solid solution composed of two or more elements. ... Alloy constituents are usually measured by mass. Unlike pure metals, most alloys do not have a single melting point; rather, they have a melting range in which the substance is a mixture of solid and liquid.
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