AQA GCSE · Chemistry 8462

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

5 multiple-choice questions marked as you go, and 3 written questions with worked solutions. All on Bulk and surface properties of matter including nanoparticles (chemistry only).

8 questions15 marksFree, no account

Question 1

1 mark

Nanoscience refers to the study of structures that fall within a specific size range. What is the standard diameter range for structures classified as nanoparticles?

Question 2

1 mark

Fine particles (\(PM_{2.5}\)) have diameters between \(100\text{ nm}\) and \(2500\text{ nm}\). How many meters is \(2500\text{ nm}\)?

Question 3

1 mark

Nanoparticles of silver are used for their antibacterial properties in socks and bandages. Which of the following is a potential risk associated with the widespread use of these nanoparticles?

Question 4

1 mark

Nanoparticles are often used in sunscreens. Why might they be more effective than larger particles of the same material?

Question 5

1 mark

In the context of particulate matter, coarse particles \((PM_{10})\) are often referred to as dust. What is the diameter range for these particles?

Question 6

2 marks

State one potential application of nanoparticles in the field of medicine and explain why they are useful in this specific context.

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Question 7

3 marks

A sample of particulate matter is classified as fine particles \( (\text{PM}_{2.5}) \). State the range of diameters for these particles and explain how their size compares to that of coarse particles \( (\text{PM}_{10}) \).

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Question 8

5 marks

Predict how the surface area to volume ratio of a cube changes if the length of its side is decreased by a factor of 10, and explain how this property affects the effectiveness of nanoparticles as catalysts compared to bulk materials.

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