4. Corrosion of metals
Metals corrode when they are
left in contact with air or water.
Which metals corrode quickly
and which corrode slowly?
When iron corrodes, it is called rusting.
5. Corrosion of metals
Metals corrode when they are
left in contact with air or water.
Which metals corrode quickly
and which corrode slowly?
When iron corrodes, it is called rusting.
Rusting is the oxidation reaction of iron
with oxygen in the presence of water.
6. Corrosion of metals
Metals corrode when they are
left in contact with air or water.
Which metals corrode quickly
and which corrode slowly?
When iron corrodes, it is called rusting.
Rusting is the oxidation reaction of iron
with oxygen in the presence of water.
oxygen iron oxideiron +
3O2 Fe2O32Fe +
