What is the definition of amalgam?

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A powdered metal mixture containing silver, tin, copper, and zincAn alloy consisting of two or more metals, with mercury as one componentAn alloy formed by melting and blending two or more metals togetherA metallic powder or tablet combined with mercury

Explanation

Option B is correct because amalgam specifically refers to an alloy made from mercury combined with one or more other metals. The other options describe different types of metal mixtures but do not include mercury as a defining element.