textile chemistry 2.1

Question 1

Why do polypropylene products float on water?

Answer 1

Because of the density

Question 2

Indicate which carbon water leads to a strong polymer?

Answer 2

Aromatic rings

Question 3

3. How do you know the atomic number of the atom?


Answer 3

By the number of protons in an atom

Question 4

4. How many valence electrons are there in 02 oxygen ion?

Answer 4

8

Question 5

5. How many valence electrons are there in o?

Answer 5

2

Question 6

6. What is the commercial name of polyamide?


Answer 6

nylon

Question 7

What is the byproduct of polycompensation polymerization reactions?

Answer 7

water

Question 8

8. How many hydrogen atoms are in ‘H’ in a butyne alkyne molecule?

Answer 8

6

Question 9

9. How many valence electrons are there in atom of phosphorus P?

Answer 9

5

Question 10

10. Which type of hydrocarbon is essential to initiate a polyaddition polymerization?

Answer 10

• Alkenes

Question 11

11. Calculate the number of neutrons in sodium (Nh3) 12

Answer 11

12

Question 12

Which material has a higher strength when wet than when dry?

Answer 12

cotton

Question 13

13. What elements does hydrocarbon mainly consist of?

Answer 13

• Hydrogen and carbon

Question 14

14. What is a property of a covalent bond?

Answer 14

• 2 electrons are shared between 2 atoms

Question 15

What curve does an elastomer present?

Answer 15


C, from bottom left to righT

Question 16

16. Which step of the polyaddition polymerization reaction is shown here?

Answer 16

Initiation

Question 17

17. What is the structural formula of propane?

Answer 17

A

Question 18

18. What is the property of kevlar?

Answer 18

• Very strong

Question 19

19. Which property is influenced by the fact that the polymer has a jumping shape structure?

Answer 19

• His good stretch

Question 20

20. Which hydrocarbon is this c7 and h16?

Answer 20

• Heptane

Question 21

21. What type of bond does water h20 form?

Answer 21

• Polar covalent bond

Question 22

22. What is the correct sequence of a polyaddition polymerization process?

Answer 22

• Initiation, propagation, termination

Question 23

23. Which of the polymers below is made by addition polymerization product method?


Answer 23

Polveurethene, PE

Question 24

How are copolymers constructed?

Answer 24

With 2 different types of monomers

Question 25

25. Which of the following options is correct in terms of strength?


Answer 25

London < dipole < h-bond

Question 26

26. Describe the alkane below?

Answer 26

3 ethyl octaan

Question 27

27. Why should you be careful with cellulose after washing, even though it is not does this apply to polyamide?

Answer 27

The wet strength of cellulose is much lower than the dry strength

Question 28

28. Calculate the electronegativity of the ‘OH’ group

Answer 28


1.24

Question 29

29. What is a property of nomex?

Answer 29

• Flame retardant

Question 30

30. What does an atom contain more of if it is positively charged?

Answer 30

Protons then electrons

Question 31

31. Name the line graph below.

Answer 31

Hexa-1-ene

Question 32

Derive from the electron gavage below the type of bonding of sodium

Answer 32

A ionbinding

Question 33

33. How many valence electrons does agron have?

Answer 33

8

Question 34

34. How does the outer ring of the atom relate to the atomic nucleus?

Answer 34

• Electrons move around the atomic nucleus

Question 35

35. Which functional groups are present in polyester?
Esther

Answer 35

Esther

Question 36

36. Which material is most suitable for recycling?


Answer 36

A thermoplastic

Question 37

37. What is an example of an elastomer?

Answer 37


Spandex

Question 38

38. Name which of the following diode gases is a noble gas?

Answer 38

?Helium

Question 39

39. What is an octet rule?

Answer 39

• The tendency to fill the outer ring