polymers

Question 1

what plastic can be reshaped with heat?

Answer 1

thermoplastics

Question 2

which plastic is easily recycled?

Answer 2

thermoplastics

Question 3

which plastic is made from a resin and a catalyst

Answer 3

Thermosetting plastics

Question 4

which plastic cannot be reheated and reshaped?

Answer 4

thermosetting plastics

Question 5

which plastic is harder to recycle?

Answer 5

thermosetting plastics

Question 6

what is a quality of elastomers?

Answer 6

they are elastic -like rubber

Question 7

thermoplastics are held together by what type of force?

Answer 7

Van der Waal forces

Question 8

what does the number one plastic mean?

Answer 8

PETE

Question 9

what does the number 2 plastic mean?

Answer 9

HDPE

Question 10

what does the number three plastic mean?

Answer 10

PVC

Question 11

what does the number four plastic mean?

Answer 11

LDPE

Question 12

what does the number 5 plastic mean?

Answer 12

PP

Question 13

what does the number six plastic mean?

Answer 13

PS - polystyrene

Question 14

what are some properties of acrylic

Answer 14

good electrical insulator
stiff, hard and durable
splinters and scratches easily

Question 15

what does HDPE mean

Answer 15

high density polyethylene

Question 16

what is the difference between HDPE and LDPE

Answer 16

LDPE is less impact resistant

Question 17

what is an issue with HDPE

Answer 17

colour tends to fade over time
can break under stress

Question 18

why is PET used for drinks bottles?

Answer 18

it is a good alcohol and oil barrier
it has high tensile strength

Question 19

what are advantages of PVC?

Answer 19

good chemical and weather resistance