Chemical changes

Question 1

how are the parts of the reactivity series ordered in terms of being extracted

Answer 1

potassium
lithium
sodium
calcium
magnesium
aluminium
carbon
zinc
iron
tin
lead
hydrogen
copper
Silver
gold

potassium -aluminium = extracted by electrolysis as more reactive than carbon

zinc-lead extracted by reduction of carbon and they are least reactive than carbon

copper - gold = very unreactive and found in native state

Question 2

what is the reaction of water like with the metals in reactivity series.

Answer 2

potassium
lithium
sodium
calcium
magnesium
aluminium
carbon
zinc
iron
tin
lead
hydrogen
copper
silver
gold

potassium - calcium = potassium = violent
lithium = very quick
sodium = quick
calcium = slower but still quick
BUT FORM HYDROGEN AND METAL HYDROXIDE.

eg potassium + water - potassium hydroxide + hydrogen

but from magnesium to copper = will not react

Question 3

what is the reaction with dilute acids and the metals in the reactivity series

Answer 3

potassium
lithium
sodium
calcium
magnesium
aluminium
carbon
zebra
iron
tin
lead
hydrogen
copper
Silver
gold

potassium - lithium = react very violently and fast
calcium = extremely vigorous reaction
magnesium = rapid reaction
zinc = quite a rapid reaction
iron = quite slow
copper = no reaction

BUT CALCIUM - IRON = FORMS HYDROGEN + SALT SOLUTION

Question 4

what is the half equation for the reaction of aluminium oxide at the cathode

Answer 4

AL^3+ + 3E- -> AL

Question 5

what is the half equation for the reaction of aluminium oxide at the anode

Answer 5

20^2- - 4e- –> 02