Methods of extraction from the ore
lithium electrolysis of the molten chloride or molten oxide
iron heat with reducing agent such as carbon or carbon monoxide
silver occur naturally as the elements
Long chain hydrocarbons (alkane) molecules are passed over a catalyst and heated to about 600-700°C. They break down into short-chain alkane molecules and atleast one alkene. There is usually more than one possible different combination of things it breaks up into.
E.g. C10H22(g)-->C8H18(g) + C2H4(g)
OR C10H22(g)-->C7H16(g) + C3H6(g)
OR C10H22(g)-->C7H14(g) + C3H6(g) + H2
Breaking a monomer's carbon=carbon bond and allowing the monomers to join together to form a long chain of carbon atoms all bonded together.
n CH2=CH2 --> -(-CH2-CH2-)n-
MONOMER REPEATING UNIT
Uses of polyethene:
HDPE- milk jugs, garden furniture
MDPE- storage tanks for fuel
LDPE- plastic bags
Diposing of addition polymers
Two molecules react together to form a new, larger molecule with the elimination of a small molecule such as water.
Esterification: the reaction between an alcohol and a carboxylic acid.
Carboxylic acid: -COOH group
Amide: -NH2 group
-C-OH H-O- --> -C-O- + H2O
water eliminated ester
A typical polyester: terylene
A typical polymide: nylon
The Haber Process - Manufacturing ammonia
The Contact Process - Manufacture of sulfuric acid
Stage 1: S + O2 --> SO2
Making sulfur dioxide
Stage 2: 2SO2(g) + O2(g) <-> 2SO3(g)
Making sulfur trioxide
Stage 3: H2SO4(l) + 2SO3(g) --> H2S2OPaints