C2.2 Structure and Properties Flashcards
1
Q
What is a polymer?
A
Many molecules
2
Q
What is a monomer?
A
One molecule
3
Q
What is a nanoparticle?
A
A very small particle, 1-100 nanometers across
4
Q
What are the advantages of using nano particles?
A
- In face creams, they cover better so you use less.
- They are effective catalysts if they have large surface area to volume ratio
- Nanoparticles in sun creams can be absorbed deeper into the skin
5
Q
What is a memory alloy?
A
An alloy that returns to it’s original shape after it has been changed