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AQA GCSE 9-1 Nanotechnology Flashcards | StudBud
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AQA GCSE 9-1 Nanotechnology
AQA GCSE 9-1 Nanotechnology
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#aqa #chemistry #gcse #new #material #nanotechnology #fullerenes #graphene
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
A nanometre is...
One trillionth of a metre
One billionth of a metre
One thousandth of a metre
One millionth of a metre
2
Having a very high surface area means that...
Nanoparticles are unreactive
Nanoparticles cannot be combusted
Nanoparticles are extremely reactive
Nanoparticles are expensive
3
Calculate the surface area of the cube
54cm2
162cm2
54cm3
36cm2
4
Nanoparticles are more reactive than larger particles of the same substance because...
There's a larger volume
There's a larger surface area to volume ratio
There's a larger amount of particles
There's a larger volume to surface area ratio
5
The
maximum
size of a nanoparticle in standard form is...
1 x 10-9
1 x 10-6
1 x 10-7
1 x 10-8
6
Why do fullerenes conduct electricity?
Due to having lots of strong covalent bonds
Due to having free 'delocalised' electrons
Due to there being many carbon atoms
Due to having a large space in the central cavity
7
The melting and boiling point of a fullerene will be.... because...
High because there are few covalent bonds
Low because there are lots of covalent bonds
Low because there are few covalent bonds
High because there are lots of covalent bonds
8
A fullerene is...
Made out of sulfur atoms
Made out of carbon atoms
Made out of hydrogen atoms
Made out of oxygen atoms
9
Explain why nanoparticles are added into sports equipment
The conduct electricity
They provide extra colour and texture
They provide lubrication
They make them stronger, more durable and lightweight
10
In a fullerene...
The carbon atoms are arranged in rings
The carbon atoms are arranged in layers
The carbon atoms are not attached
The carbon atoms are arranged randomly
11
Which of these is NOT a use of nanotechnology?
Sunscreens
Sports equipment
Antibacterial wound dressings
Car tyres
12
Which of these is NOT a problem with using nanoparticles?
They have replaced older natural materials
We don't know the long term impacts of using them
They could be harmful to the body and we don't know it
The benefits and risks of using them must be understood
13
Nanoparticles are between....
1-10,000nm in size
1-1000nm in size
1-10nm in size
1-100nm in size
14
True or false; fullerenes can conduct electricity
True
False
15
Nanoparticles are measured in...
mm
nm
m
cm
