reactivity series Flashcards
What is oxidation
The gaining of oxygen
what is reduction
The losing of oxygen
what is an oxidising agent
the substance that loses oxygen and gives it to the more reactive substance
what is a reducing agent
the substance that gains oxygen and takes it from the less reactive substance
What is the barrier method when preventing rusting
creating a physical barrier to oxygen and water (eg painting, coating, galvanising)
What is galvanising
Covering the iron/steel object in a thin layer of zinc, creating a physical barrier to oxygen and water
What is sacrificial protection?
The protection of iron or steel against corrosion by using a more reactive metal. (eg when zinc squares are put on the hulls of ships to prevent corrosion)
What is the order of Reactivity
Purple - potassium
Sheep - sodium
Like - lithium
Creepy - calcium
Monkeys - magnesium
And - aluminium
Zebras - zinc
I - iron
Can’t - copper
Seduce - silver
Gorillas - gold
What is a redox reaction
a reaction in which both reduction and oxidation occur (red-ox)
