Metals

Question 1

Reactivity series for metals

Answer 1

Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
zinc
Iron 
tin
Lead
Hydrogen
Copper
Silver
Gold
Platinum

Question 2

Displacement reaction theo is dumb

Answer 2

If a metal is more reactive than another one, it will displace the less reactive one, when they react
eg) zn + CuSo4–>znSo4 + Cu
The copper is displaced by the zinc because zinc is more reactive

Question 3

Whats OILRIG

Answer 3

An oxidising agent oxidises something else.

Oxidation is loss of electrons (OIL).

That means that an oxidising agent takes electrons from that other substance.

So an oxidising agent must gain electrons.

A reducing agent reduces something else

Reduction is gain of electrons(RIG)

That means that an reducing agent gains electrons from the other substance

So a reducing agent must lose electrons

Question 4

Conditions which iron rust

Answer 4

Iron and steel rust when water and oxygen is present

Question 5

Barrier methods

Answer 5

You can paint the metal
You put zinc coating onto the iron or steel, Galvanising
you put a block of zinc near the iron or metal, sacrificial protection