nanoparticles Flashcards
1
Q
what are course particles also called
A
PM10 or dust
2
Q
what is the size of the diameter for a course particle
A
between 1 x 10^-5 m
and 2.5 x 10 ^ -6 m
3
Q
what are fine particles also called
A
PM 2.5
4
Q
what is the size of the diameter for a fine particle
A
between 100 - 2500 nanometers
(1 x 10^-7 m and 2.5 x 10^-6 m )
5
Q
what is the size of a nano particle
A
between 1-100 nanometers
6
Q
what happens when the particle size decreases by ten times
A
surface area to volume ratio increases by ten times
7
Q
what are some of the uses of nano particles
A
medicines, sun creams, cosmetics, deodorants, electronics and catalysts
