Nano-science Flashcards

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How long is a nanometre?
One billionth of a metre or 0.000 000 001 metres
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What is the thermal conductivity of a carbon nano-tube?
Along tube = 3500 Across tube = 1.52 (W/m/K)
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When were carbon nano-tubes first made?
In 1990
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What are the measurements of a carbon nano-tube?
The walls are 1 atom thick and have a diameter of 1nm
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Name three things that carbon nano-tubes are useful for
- Strengthening sports equipment -Making lightweight bullet-proof vests -To heat up freezing aircraft wings
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Name three medical uses of nanoparticles
-Magnetic tumor treatment -Bandages that detect infection - Cancer drugs with no side effect
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Name two advantages of nano-particle bandages
Don't have to take bandage off, Know when infected and Treated immediately
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Name two advantages of a nano-particle cancer treatment
No side effects, No waste of medicine
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Name an advantage and a disadvantage of nano-particle tumour treatment
Healthy cells are not harmed, Have to know where tumour is
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What is the chemical that people are worried about in current sunscreen?
Zinc oxide nano-particles
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By what percent does diesel fumes build fatty cholesterol in your blood?
55%
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Why do we continue to use sunscreen even though we know that it can damage health?
Because the risk of not using it is much higher and can lead to skin cancer
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What is the chemical formula and products of octane combustion?
Products: Carbon dioxide and water. Chemical formula
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What are the two formulas for the production of Oxides of Nitrogen?
N2+O2=2NO (Nitrogen monoxide) N2+2O2=2NO2 (Nitrogen dioxide)
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What percent of the UKs CO2 emissions are from cars?
13%
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Identify three health problems caused by diesel particulates
Heart attacks, asthma and chest inffections
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What are State the advantages and disadvantages of using a hydrogen as fuel?
Advantage: Waste product is water Disadvanatges: Not many hydrogen fule stations, and mixtures of hydrogena and oxygen can be explosive, waste product of production is carbon dioxide.
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What is the defeninition of renewable?
Replaced easily.
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What is the defifintion of non-renewable?
Used quicker than it can be replaced
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What is the definition of carbon nuetral?
Puts as much CO2 into the atmophere as it takes
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Why are biofuels not really carbon neutral?
Becuase farmers use diesel/petrol tractors and fertilisers.
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Other cards in this set

Card 2

Front

What is the thermal conductivity of a carbon nano-tube?

Back

Along tube = 3500 Across tube = 1.52 (W/m/K)

Card 3

Front

When were carbon nano-tubes first made?

Back

Preview of the front of card 3

Card 4

Front

What are the measurements of a carbon nano-tube?

Back

Preview of the front of card 4

Card 5

Front

Name three things that carbon nano-tubes are useful for

Back

Preview of the front of card 5
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