Chemistry

Question 1

1A polymer is

Easy

A. a small molecule B. a mixture of metals C. a large molecule made from many small repeating units called monomers D. an element

Question 2

2The monomer of PVC is chloro___.

Easy

Your answer (fill in the blank)

Question 3

3Recycling plastics reduces pollution.

Easy

A. True B. False

Question 4

4The monomer of PVC is

Easy

A. propene B. ethene C. styrene D. chloroethene (vinyl chloride)

Question 5

5Thermosetting plastics

Medium

A. are made of metal B. dissolve in water C. do not soften on reheating because of cross-links D. soften each time they are heated

Question 6

6A plastic that hardens permanently on heating is a ___ plastic.

Easy

Your answer (fill in the blank)

Question 7

7Nylon and proteins both contain the ___ linkage.

Medium

Your answer (fill in the blank)

Question 8

8Thermoplastics

Medium

A. are always natural B. soften on heating and can be remoulded C. set permanently when heated D. never melt

Question 9

9Addition polymerisation involves

Easy

A. loss of water between monomers B. monomers with C=C bonds joining without losing any molecule C. breaking polymers down D. adding acid

Question 10

10The monomer of starch is

Easy

A. isoprene B. glucose C. amino acid D. ethene