Question detail

How do nanoparticles differ from bulk materials in terms of properties?

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

Bulk and surface properties of matter including nanoparticles (chemistry only)

Question

A. They have the same properties as bulk materials
B. They can have different properties due to their size
C. They are always more toxic than bulk materials
D. They are less reactive than bulk materials

Answer

The correct option is They can have different properties due to their size. This answer is correct because it matches the approved learning objective to (chemistry only) Explain why smaller quantities of nanoparticles may be effective because of high surface area to volume ratio in the subtopic Sizes of particles and their properties.

Explanation

The correct option is They can have different properties due to their size. They can have different properties due to their size is correct because it directly supports the approved learning objective to (chemistry only) Explain why smaller quantities of nanoparticles may be effective because of high surface area to volume ratio. This belongs to the subtopic Sizes of particles and their properties within Bulk and surface properties of matter including nanoparticles (chemistry only), 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 Sizes of particles and their properties.

Common mistake

Misunderstanding Surface Area to Volume Ratio

Students often think that the effectiveness of nanoparticles is solely due to their small size, without understanding the importance of the surface area to volume ratio.

Emphasize that the high surface area to volume ratio of nanoparticles allows for more interactions with other substances, making them more effective in applications.

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