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Nanotechnology
Silver nanoparticles are added to socks to stop them smelling.

Nanotechnology

This Chemistry quiz is called 'Nanotechnology' and it has been written by teachers to help you if you are studying the subject at high school. Playing educational quizzes is a user-friendly way to learn if you are in the 9th or 10th grade - aged 14 to 16.

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This high school Chemistry quiz is all about nanotechnology - the handling of matter on an atomic level. In 1981, Gerd Binnig and Heinrich Rohrer developed the scanning tunneling microscope. This is an instrument for imaging the surfaces of matter at the atomic level, for which they received the Nobel Prize in Physics in 1986. By the end of the 1980's, this microscope had even been used to manipulate individual atoms.

1.
Which of the following properties does NOT change when dealing with nanoparticles of a substance?
Melting point
Sensitivity to light
Atomic structure
Intermolecular forces
The substance is still made of the same atoms, only the number of them changes
2.
The surface area to volume ratio for nanoparticles is...
much greater than for larger particles
much smaller than for larger particles
the same as larger particles
there is no difference if the particle is the same substance
This could make them useful as catalysts because one of the factors that increases the rate of a chemical reaction is to increase the surface area
3.
Some people are concerned that nanoparticles could be...
too small to be able to manipulate
too small to be of any use
too small to see
toxic to humans
Some people believe that there should be much more testing before nanoparticles are used in humans
4.
What is nanotechnology?
The manipulation of matter with an ipod nano
The manipulation of matter on an atomic level
The manipulation of matter on a macromolecular level
The manipulation of matter on a huge scale
'Nano' is from the Greek word 'nanos' meaning dwarf
5.
Nanoparticles are measured in...
metres
millimetres
nanometres
centimetres
Nanometres = nm, 1 nm = 1 x 10-9m
6.
Why might nanotubes be useful as drug delivery systems?
They are expensive
They are strong
They are light
They are hollow
Experiments on insects have shown that this method of delivering drugs is possible
7.
Why are silver nanoparticles added to socks?
They prevent socks getting taken by the sock monster
They help the socks absorb moisture
They stop the socks from smelling
They make the socks lighter
Silver nanoparticles are antibacterial so they prevent bacteria causing a smell
8.
Which of the following is NOT a current use for nanoparticles?
Sports equipment
Weapons
Clothing
Sun creams
It is possible that nanotechnology could be used to produce extremely dangerous weapons in the future
9.
Why are nanoparticles used in tennis rackets?
To make them lighter and stronger
To make them faster and more accurate
To make them faster and lighter
To make them more accurate and stronger
Nanoparticles are used commercially in other sporting equipment such as golf clubs
10.
What size of particles does nanoscience deal with?
1 - 100nm
100 - 1,000nm
1,000 - 100,000nm
1,000,000 - 10,000,000nm
In comparison, a human hair is approximately 60,000nm
Author:  Kate Gardiner

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