2.6 - Nanoscience Flashcards
What is nanoscience?
The study of small particles between 1 and 100 nanometres in science
What is so special about how atoms arranged into small particles behave?
When atoms are arranged into very small particles, they behave differently to ordinary materials made of the same atoms
How long is a nanometre?
One billionth of a metre (10^-9 m)
How big are nanoparticles?
A few nanometres in size (between 1 and 100). They contain a few hundred atoms arranged in a particular way
Why are nanoparticles useful materials?
Their small sizes give them large surface areas and new materials
What are five ways in which nanotechnology uses nanoparticles?
- as highly selective sensors
- as very efficient catalysts
- as new coatings
- as new cosmetics (e.g sun screens and deodorants)
- to give construction materials special properties
What is a problem with nanoparticles being used more?
- There will be a greater risk of them finding their way into the air or into our bodies,
- which could have unpredictable consequences for our health and environment
What needs to happen in nanoscience before the use of nanoparticles becomes more widespread?
More research needs to be done into the effect of nanoparticles on our health and environment
