C2.3.4 - Nanoparticles Flashcards
1
Q
What is a nanoparticle?
A
A particle between 1nm and 100nm across, containing just a few hundred atoms
2
Q
What is a nanoparticulate?
A
A material made from nanoparticles
3
Q
Do nanoparticles have a high or low surface area to volume ratio?
A
A high surface area to volume ratio
4
Q
What makes the small size of nanoparticles useful for?
A
- New paints
- New cosmetics, medicines, and sunscreens
5
Q
Why can nanoparticles be used as catalysts?
A
Because they have a high surface area to volume ratio
6
Q
Why are nanoparticles added to sports equipment added to plastics in sports equipments?
A
To make the plastic stronger and more durable without adding barely any mass
7
Q
What are the risks of nanoparticles?
A
They are so tiny that they may be breathed in, absorbed by the skin, or passed into cells.
