Properties

Question 1

LDPE and HDPE

Answer 1

Cheap, chemical resistance , buoyant,

Question 2

PET

Answer 2

Hard, stiff, low absorption, strong,
Signs, drink bottles, bank cards

Question 3

Acrylic

Answer 3

Hard, tensile strength, uv and weather resistant

Headlight, aircraft canopies, baths

Question 4

Polystyrene

Answer 4

Toys, fittings, protective cases

Question 5

Polypropylene

Answer 5

Chem resistance, flexible, stress resistant

Chemical containers, fuel cans
Food containers

Question 6

Thermosetting
Epoxy reson

Answer 6

Strong, good insulator, Chem resistance

Sealants and coatings

Question 7

Thermosetting
Polyester resin

Answer 7

Stable, low cost, mechanical and Chem resistance, insulation

Question 8

Softwood
Redwood

Answer 8

Strong, knotty, durable when treated, low cost

Shelves roofs cupboards

Question 9

Soft wood
Spruce

Answer 9

Hard knots, not hard wearing

Indoor furniture

Question 10

Soft wood
Scots pine

Answer 10

Prone to knots, easy to work with relatively cheap

Low cost furniture

Question 11

Hard wood
beech

Answer 11

Prone to warping, strong and hard, close grained

Question 12

Hard wood
Elm

Answer 12

Open grain, resists splitting, durable in water,

Indoor and outdoor furniture

Question 13

hardwood
ash

Answer 13

open grained
sport equip, ladders, tools