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Worksheet 2 on rusting and corrosion
(GCSE level)
Metal reactivity notes
(GCSE level)
Worksheet on RUSTING and METAL CORROSION Part 1
alloy chromium faster first flake less oil oxidation oxide oxygen paint reactive rusting sacrificial stainless water zinc
1.
Iron (or steel) unfortunately corrodes
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
than most other transition metals and readily does so in the presence of both
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
(in air) and
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
to form an iron
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
. Iron corrosion is called
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
and the chemical change with oxygen is called an
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
reaction.
2.
Iron and steel (an
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
of iron) are most easily protected by
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
which provides a barrier between the metal and air/water. Moving parts on machines can be protected by a water repellent
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
or grease layer.
3.
This corrosion can be prevented by connecting iron to a more
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
metal (e.g. zinc or magnesium). This is called
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
protection. By mixing iron with other metals such as
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
you can make a non-rusting alloy called
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
steel. Coating iron or steel with a
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
layer is called 'galvanising'. The zinc preferentially corrodes first to form a zinc oxide layer that doesn't
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
off. However if a
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
reactive metal is attached, the iron then rusts
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
as it becomes the more
alloy
chromium
faster
first
flake
less
oil
oxidation
oxide
oxygen
paint
reactive
rusting
sacrificial
stainless
water
zinc
metal!
CHECK
OK
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Worksheet 2 on rusting and corrosion
(GCSE level)
Metal reactivity notes
(GCSE level)