The Reactivity Series Flashcards
yada yada yar
What are the reactivity series?
It ranks metals depending on how reactive they are
List the reactivity series in order, please
- potassium
- sodium
- lithium
- calcium
- magnesium
- aluminium
- zinc
- iron
- copper
- silver
- gold
What is corrosion?
The reaction of a metal with oxygen
What is rusting?
The corrosion of iron
What is required for rusing to happen?
Oxygen and water
What is the barrier method?
Applying a protective layer over the iron
eg. paint, wax
What is galvanising?
Applying a protective zinc layer that protects the iron
What is sacrificial protection?
Protecting iron by putting slabs of more reactive metals to ‘sacrifice’ it before the iron oxidises
What is oxidation?
When a substances reacts with oxygen
What is reduction?
When there is a loss of oxygen
What is a redox reaction?
A reaction in which both oxidation and reduction occur
Finish the reaction:
magnesium + oxygen ->
magnesium oxide
Finish the reaction:
lithium + water ->
lithium hydroxide + hydrogen
What is a displacement reaction?
When a more reactive element displaces a less reactive element from a compound
Finish the reaction:
sodium + magnesium oxide ->
sodium oxide + magnesium
What is the chemical symbol of rust?
hydrated iron (III) oxide
What are the products of a metal and acid reaction?
metal salt and hydrogen
