Nanoparticles

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How many atoms are in a nanoparticle?
A few hundred
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What ways are nanoparticles beneficial in sun cream?
-Better skin coverage -More effective protection from ultraviolet -Clear and colourless -Don't degrade on exposure to the sun
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What risks come with nanoparticles?
-They are so small they may be able to penetrate cell membranes or be breathed in. They may be more reactive or toxic in the body -They have harmful effects on the environment
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Why do they have different properties and uses from the bulk materials?
Their high surface area to volume ratio
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How many metres (m) is one nanometre (nm)?
0.000000001m
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Other cards in this set

Card 2

Front

What ways are nanoparticles beneficial in sun cream?

Back

-Better skin coverage -More effective protection from ultraviolet -Clear and colourless -Don't degrade on exposure to the sun

Card 3

Front

What risks come with nanoparticles?

Back

Preview of the front of card 3

Card 4

Front

Why do they have different properties and uses from the bulk materials?

Back

Preview of the front of card 4

Card 5

Front

How many metres (m) is one nanometre (nm)?

Back

Preview of the front of card 5

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