p1: classification of materials

Question 1

ferrous

Answer 1

metal-containing mostly iron and carbon
. are magnetic and will rust

Question 2

Non-ferrous

Answer 2

does not contain iron
. are not magnetic and do not rust

Question 3

alloy

Answer 3

metal made up of two metals
. can also be subclassified as ferrous alloys and non-ferrous alloys

Question 4

Hardwoods

Answer 4

broad-leafed trees.
Slow-growing loses leaves in autumn

Question 5

softwood

Answer 5

coniferous trees
. trees are fast growing and tend to evergreen

Question 6

manufactured board

Answer 6

man-made wood based on composite materials
larger sizes than solid wood

Question 7

Thermoplastic

Answer 7

can be repeatedly reheated and reshaped allowing to be recycled after use.
long linear chain

Question 8

Thermosetting

Answer 8

When heated it undergoes a chemical change whereby molecules form rigid cross-links.
cannot be reheated and reshaped even at high temp

Question 9

Elastomer

Answer 9

at room temp it can be deformed under pressure and released off pressure and return to its original shape.
has weak bonds allows to stretch easily

Question 10

paper + board

Answer 10

can be scored, folded and cut with basic tools.

Question 11

composite

Answer 11

comprised of 2 or more diff materials
can be fibre based, particle-based, sheet based

Question 12

smart materials

Answer 12

physical properties change in response to an input or change in environment eg light, temp, pressure, or electricity.

Question 13

modern material

Answer 13

developed through the invention of new or improved processes
does not react to external shapes.