Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry 2 > Polymers and Nanotechnology > Flashcards

Polymers and Nanotechnology Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

What can ninitol be used for?

A
  1. Dental braces

2. Glasses frames

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is ninitol?

A

A shape memory alloy.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is ninitol made of?

A

Half nickel and half titanium.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How big are nanoparticles?

A

1-100 nanometres across.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How many atoms do nanoparticles contain?

A

A few hundred atoms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are fullerenes shaped like?

A

Hollow balls or closed tubes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How are carbon atoms arranged in fullerenes?

A

Hexagonal rings.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are nanotubes?

A

Fullerenes joined together in hollow tubes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why are carbon nanotubes strong?

A

Lots of covalent bonds.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why are nanoparticles useful as industrial catalysts?

A

Huge surface area to volume ratio.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why are nanoparticles good sensors?

A

They only detect one type of molecule.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What kind of building materials do nanotubes make?

A
  1. Stronger

2. Lighter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Why are nanoparticles good for cosmetics?

A

They don’t leave white marks.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is nanomedicine?

A

The idea that tiny fullerenes are absorbed more easily by the body than most particles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Why would nanoparticles be good as medicines?

A

They deliver drugs right into the cells where they’re needed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where can fullerene lubricant coatings be used?

A

Artifical joints and gears.

17
Q

Why can nanotubes be used in tiny electric circuits?

A

They conduct electricity.

18
Q

What are thermosoftening polymers?

A

Polymers that can be melted and remoulded.

19
Q

Why can thermosoftening plastics be melted easily?

A

They don’t have crosslinks between chains.

20
Q

What are thermosetting polymers?

A

Strong polymers that don’t soften when heated.

21
Q

Why don’t thermosetting polymers melt?

A

They have crosslinks that hold the structure together.

22
Q

What are the two types of polythene?

A
  1. Low density

2. High density

23
Q

How is LD polythene made?

A
  1. 200C

2. High pressure

24
Q

What is LD polythene used for?

A

Bags and bottles.

25
Q

How is HD polythene made?

A
  1. Lower temperature

2. Lower pressure (catalyst)

26
Q

What is HD polythene used for?

A

Water tanks and drainpipes.

Chemistry 2 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions