A spherical coarse particle has a diameter of 4000 nm. A spherical fine particle has a diameter of 200 nm. How many times larger is the diameter of the coarse particle than the diameter of the fine particle?

Answer options:

2 times

5 times

20 times

50 times

How to approach this question

To find out how many times larger one number is than another, you divide the larger number by the smaller number. Calculate 4000 ÷ 200.

Full Answer

C.20 times✓ Correct

20 times

To find how many times larger the coarse particle's diameter is, we perform a division:\n\nRatio = (Diameter of coarse particle) / (Diameter of fine particle)\nRatio = 4000 nm / 200 nm\nRatio = 20\n\nSo, the diameter of the coarse particle is 20 times larger than the diameter of the fine particle.

Common mistakes

✗ Performing the division incorrectly.\n✗ Dividing the smaller number by the larger number.

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A spherical coarse particle has a diameter of 4000 nm. A spherical fine particle has a diameter of 200 nm. How many times larger is the diameter of the coarse particle than the diameter of the fine particle?

How to approach this question

Full Answer

Common mistakes

Practice the full AQA GCSE Chemistry Foundation Tier Paper 1

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