C2 CGP Material Choises Flashcards
A mixture of chemicals contain different substances that aren’t
Bonded together
For example rock salt
Every material is made ⬆ of…
Every (answer above) is made ⬆ of…
Chemicals
Atoms
Materials are made
Naturally and Synthetically
The advantage of making materials in a factory is that
You can control its properties
Synthetic materials get their resources from
The earths crust
The 5 main properties that affect materials are
Melting point Strength Stiffness Hardness Density
The 2 main types of strength are
Tensile⬅⚽➡
Compression ➡⚽⬅
Stiffness is how good it is at…
Not bending
Stiff-steal
Not stiff-jelly
Hardness is how difficult something is to…
Cut into
Diamond is the hardest thing to cut
Density is how full ⬆ something is.
It is know as M… P.. U… V…..
Mass per unit volume
Gold is dense unlike air
Properties of plastics are
Hard, strong, stiff
Low density and mouldable
Properties of rubber are
Strong flexible and mouldable
Properties of nylon are
Soft, flexible, good tensile strength
Materials affect a products
2 bits
Durability and effectiveness
