C3.1.1 - Nanoparticles Flashcards

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1
Q

What is the approximate diameter of a nanoparticle?

A

1-100 nanometres

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2
Q

Can you see a nanoparticle with a normal microscope?

A

No

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3
Q

Nanoparticles are measured in which units?

A

Nanometres

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4
Q

How many nanometres are in 1 metre?

A

1 billion

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5
Q

What is a nanoparticle?

A

A tiny piece of a substance made up of just a few hundred atoms.

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6
Q

Why are nanoparticles special?

A

They have different properties to normal sized pieces of the same substance.

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7
Q

What is it about nanoparticles that gives them such special properties?

A

They have a huge surface area (more atoms on their surface)

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8
Q

What is meant by the properties of a substance?

A

Its features

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9
Q

How do the properties of gold change when they are in nanoparticles?

A

Normally yellow coloured but nanoparticles look red when mixed in water. Normal gold cannot be mixed with water.

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