Multiple Choice
In the classification of matter, into which two main groups can all matter be categorized?
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1. Intro to General Chemistry
Classification of Matter
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Which of the following best describes an alloy?
A
A pure substance consisting of a single element.
B
A compound formed by the chemical reaction of metals.
C
A homogeneous mixture of two or more metals.
D
A heterogeneous mixture of metals and nonmetals.
Verified step by step guidance1
Understand the definition of an alloy: An alloy is a material made by combining two or more elements, where at least one is a metal, to create a substance with metallic properties.
Recognize that alloys are not pure substances because they contain more than one element and are not chemically bonded in fixed ratios like compounds.
Identify that alloys are homogeneous mixtures, meaning their composition is uniform throughout the sample.
Distinguish alloys from pure substances (which contain only one element) and from heterogeneous mixtures (which have visibly different parts).
Conclude that the best description of an alloy is a homogeneous mixture of two or more metals.
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