Topic 4 Flashcards
(28 cards)
oxidation
reaction w or adding oxygen
combustion
reactions invokve oxidation
exothermic
reactivity series shiws
how easily meyals are oxidised
what dows it mean when metal lises outer electton easy
cv reactice
magnesium
vv fizzy
loud pop
aluminium
fizzy
pop
zinc
wuite pop
lil fizz
iton
cv wuite pop
lil fizz
copper
no pop
no fozz
what metals react vigourlsy w water
potassium
sodium
lithium
calcium
displacement reactions
more reactice metal is oxidised and less reactice metal is reduced
metal ore
rock that contains enough megal to make it economically worth extracting metal from it
one way metals can be extracted
reduction with carbon
bioleaching
bacteria to seperate metals from their ores
bacteria get energy from bonds between atoms in ore
which sepereatwa metal from ore
phytoextraction
frowing plants in soul ghag contains metal compounds
build up metal in leaves
burned
ash contain metal
ehat does recycling material do
save energy
how does revycling lrotect wnvironment
sont need ws many mines thats destroy habitats
cuts down on landfill
recycling economic benefits
less expensive
creates mire jobs
life cycle assesment
easch stage or life of a product
lca order
choice of material
manafacture
product yse
disposal
reversible traction
prodycts can react w eachither to produce origanel reactants
dynamic equilibrium
forward abd backward reactions are voth happenung at sane time and at sane rate
concentration of reactahr and products balance
3factirs that change position if equilibrium
temp
pressure
comcentrarion
when u do smth to reversible reaction
equilibrium position will move to try undi ur chnage
