Question detail

How does alloying improve the properties of metals?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Using materials

Question

A. By changing their atomic structure
B. By increasing their melting points only
C. By making them more reactive
D. By reducing their density

Answer

The correct option is By changing their atomic structure. This answer is correct because it matches the approved learning objective to explain that most metals used in everyday life are alloys. (Chemistry only) in the subtopic Alloys as useful materials.

Explanation

The correct option is By changing their atomic structure. By changing their atomic structure is correct because it directly supports the approved learning objective to explain that most metals used in everyday life are alloys. (Chemistry only). This belongs to the subtopic Alloys as useful materials within Using materials, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Alloys as useful materials.

Common mistake

Misunderstanding Alloys

Students often think that all metals are pure and do not recognize that most metals used in everyday life are actually alloys.

Emphasize that an alloy is a mixture of two or more elements, where at least one is a metal, and that most metals in common use are alloys designed to enhance properties such as strength and resistance.

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