Notes

C10
potable water is a drink water that goes through many a process in able for it to be drinkable
products used for it to be cleaned are chlorine and flourine to make it good for our teeth
corrossion is the destruction of the materials by chemical reactions with substance found in the enviroment
the corrosion of iron is called rusting, rusting requires oxygen and water
rust is a form of iron oxide
iron+ oxygen+ water = hydrated iron oxide (iii)
we can prevent rusting manty a way by coating the iron with
paint , oil or grease , plastic, a less reactive material or a more reactive material
alloys are a mixtures of metal atoms of a different element (normally another meta)
alloys are much harder than normal metals

this is because the lays are distrupted so cannot slide over each other

composites are made up of differne tmaterials which have have been combined to improve their properties

thermosofting polymers
weak intermolecular forces between polymer chains
intermolecular forces reform one cooler
polymer can be remoulded

glass ceramics and composites uses
Soda lime glass
drinks bottles glasses windows
borosillicate glass uses
lab glasware cookware eyeglassses ware insulation
ceramics uses
bricks brittle potery
crokery insulations

polymer chains are fixed together by stoong covelant bonds

examples of alloys
bronze- statues
brass - door fitting
high cartbon steel- metal presses