Sizes of Particles & their Properties (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the size range of nanoparticles?
What is the size range of nanoparticles?
1 - 100 nm
What is a nanometre?
What is a nanometre?
A billionth of a metre
How many atoms typically make up nanoparticles?
How many atoms typically make up nanoparticles?
A few hundred atoms
What is the size range of fine particles?
What is the size range of fine particles?
100 - 2,500 nm
What is the size range of coarse particles?
What is the size range of coarse particles?
2,500 - 10,000 nm
What are fine particles also known as?
What are fine particles also known as?
PM2.5
What property do nanoparticles have compared to larger particles?
What property do nanoparticles have compared to larger particles?
Very high surface area to volume ratio
Why is high surface area important for nanoparticles?
Why is high surface area important for nanoparticles?
Makes them more reactive and effective
If a cube shrinks by 10 times, what happens to its surface area to volume ratio?
If a cube shrinks by 10 times, what happens to its surface area to volume ratio?
Increases by 10 times
What advantage do nanoparticles offer due to their high surface area?
What advantage do nanoparticles offer due to their high surface area?
Use less to achieve the same effect