nano- materials

Question 1

what are nano materials?

Answer 1

they are materials made from nano particled that range from 100nm to 1nm and have to be seen with a microscope
. they are different from the same subatnce in bulk

Question 2

what are the properties of nano particles?

Answer 2

. large surface area compared to volume
. able to react very quickly aka good catalysts

Question 3

what could nano particled be used for?

Answer 3

self cleaning ovens and windows

Question 4

what do nanoparticles also have?

Answer 4

different properties to the same substance in normal sized pieces

Question 5

what is an example of a nano materials and what are it’s uses ?

Answer 5

• titanium dioxide
• used in house paint and some chocolate coatings
• titanium dioxide particled are so small they do not reflect visible light
• used in sunscreen to block UV light and don’t appear on the skin because they’re so small

Question 6

what is self cleaning glass coated with?

Answer 6

nano scale totanium dioxide particles
-catalyse the breakdown of dirt in the presence of UV light
- causes water to spread into a thin film rather than droplets

Question 7

what are the features of nano sized silver particles ?

Answer 7

-antibacterial
-antiviral
-antifungal

Question 8

what are the uses of nano sized silver particles?

Answer 8

-in plasters
-antiseptic spray
-socks
- deoderant sprays

Question 9

what are the long term effects of nano materials?

Answer 9

unkown, they are still being tested as long term exposure is uncertain if it will cause problems