Reactivity series and extraction of metals

Question 1

How to remember reactivity series

Answer 1

Please
Sir
Can
Me
And
(carbon)
Zebra
Ignite
Lewis
(hydrogen)
Cruelly,
Sneakily
Gandalf 
Please

Question 2

Atoms above carbon

Answer 2

Extracted by electrolysis

Question 3

Atoms above hydrogen

Answer 3

Extracted using reduction

Question 4

Atoms below hydrogen

Answer 4

Occur naturally

Question 5

Define oxidation

Answer 5

Oxidation is the loss of electrons and the gain of oxygen

Question 6

Define reduction

Answer 6

Reduction is gain of electrons and loss of oxygen

Question 7

Outline the extraction of iron

Answer 7

Coke burns to form CO2
CO2 is reduced to CO
Iron ore reduced by CO to Fe
Calcium neutralises silicon dioxide to form slag

Question 8

Electrolysis electrodes

Answer 8

Cathode= - and reduction
Annode= + electrode and oxidation
Metals formed at cathode
Non-metals at annode

Question 9

Outline the main process of aluminum extraction

Answer 9

Bauxite goes to alumina and then dissolved in cryolite which is an electrolyte that undergoes electrolysis

Question 10

Indentifying aqeous solutions

Answer 10

Ca2+ - sodium hydroxide goes deep blue and cloudy
Fe2+ - olive green precipitate forms
Fe3+ - red precipitate

Question 11

How can the productivity of water be improved

Answer 11

addition of acid increase H+ and OH-