Question detail
What is a common feature of nanoparticles used in cosmetics?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Bulk and surface properties of matter including nanoparticles (chemistry only)
Question
- A. They are larger than regular particles
- B. They have a high surface area to volume ratio
- C. They are always colored
- D. They are made from only one element
Answer
The correct option is They have a high surface area to volume ratio. This answer is correct because it matches the approved learning objective to (chemistry only) Describe that nanoparticles have applications in cosmetics, sun creams and deodorants in the subtopic Uses of nanoparticles.
Explanation
The correct option is They have a high surface area to volume ratio. They have a high surface area to volume ratio is correct because it directly supports the approved learning objective to (chemistry only) Describe that nanoparticles have applications in cosmetics, sun creams and deodorants. This belongs to the subtopic Uses of nanoparticles 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 Uses of nanoparticles.
Common mistake
Misunderstanding Applications of Nanoparticles
Students often state that nanoparticles are only used in cosmetics without mentioning sun creams and deodorants.
To fix this, students should remember to include all applications of nanoparticles in cosmetics, sun creams, and deodorants when describing their uses.
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