Nano particles Flashcards
1
Q
Lumps and powders are examples of what?
A
Bulk materials
2
Q
What are nano particles
A
a few hundred atoms, which are much larger than just atoms, but smaller then cells
3
Q
1nm is equal to what in m
A
1x10^-9
4
Q
What are nano particles useful for
A
There large surface area to volume ratio, also used as catalysts
5
Q
What is Titanium dioxide in bulk
A
A white solid which can absorb harmful ultraviolet radiation (Sunscreen)
6
Q
What are the risks of nano particles
A
May be hazardous to humans, may cause environmental damage due to small size, catalyse harmful reactions (can’t tell due to not being used for long)
