SC26 Bulk and Surface Properties of Matter Including Nanoparticles

Question 1

Define glass ceramics

Answer 1

The majority of glass made is soda-lime glass which is made by heating limestone, sand and sodium carbonate until they melt

Question 2

Define clay ceramics

Answer 2

It can be hardened by firing at very high temperatures making it ideal as a building material

Question 3

Define composite materials

Answer 3

Such as fibreglass and concrete, are made of one material (the reinforcement) embedded in another (the matrix/binder)

Question 4

Define polymerisation

Answer 4

Polymerisation is the reaction of monomer molecules to form long chain polymer molecules

Question 5

When should you use polymers?

Answer 5

Flexible, easily moulded, less dense, degrade over time

Often used when designing products that need to have a low mass

Question 6

When should you use ceramics?

Answer 6

are insulators of heat/electricity, don’t degrade or corrode, strong and hard wearing

Often used based on strength for building materials

Question 7

When should you use metals?

Answer 7

good conductors, corrode easily bur products made from corrosion resistant metals last ages

Often used for all sorts idk

Question 8

When should you use composites?

Answer 8

different properties based on the matrix and the reinforcement , expensive

Often used based on strength for building materials

Question 9

Properties of glass

Answer 9

transparent, strong, moulded when hot, brittle when thing

Question 10

Properties of clay

Answer 10

a mineral formed from weathered and decomposed rock that’s soft when it’s dug up, making it easy to mould

Question 11

Properties of metals

Answer 11

good conductors, high density, malleable, mixed with other elements to form alloys