C6 Chemistry Out There Flashcards
What does OILRIG mean?
Oxidation Is Loss Reduction Is gain (Of electrons)
What’s a redox reaction?
One where electrons are transferred
How can you prevent rust?
Mix metals with other ones to create an alloy
What is the sacrificial antitrust method
Place a more reactive metal with the iron and then oxygen and water will react with this “sacrificial” metal instead of the iron
Give an example if a sacrificial antitrust method
Galvanising. Zinc put ontop of iron as a barrier buckets or corrugated iron has this done
Define electrolysis and how it works
Splitting up with electricity
Current passed through a molten or dissolved ionic compound to decompose it
Where will positive ions go in electrolysis
To the cathode and it will gain electrons
Where will negative ions go in electrolysis
To the anode and it will lose electrons
What happens to ions that gain or lose electrons
They become atoms or molecules and are discharged from the solution at the electrodes
