Electrolysis

What is electrolsysis?

The decomposition of an ionic compound into elements using electricity.

What type of elements do we use elctrolysis on?

Reactive elements

List 2 things a D.C supply is used for

to identify products formed during electrolysis

forces electrons to move in one direction

What is the full meaning of D.C ?

Direct Current

What is an electrolyte?

An ion containing solution that allows electricity to flow

What 2 states are elecrolytes always in?

molten or liquid

Full meaning of OILRIG

Oxidation is Reducing Reduction is Gaining

Explain what happens to lead bromide in electrolysis

Lead(metal) will be attracted to the negative electrode(cathode) where it wil become solid aas it goes from a charged ion to a neutral atom. Bromine (non metal) will be attracted to the posisitive electrode(anode) where it will pair up as it is a diatomic element and become gas floating up.

What happens at the anode and why?

Oxidation as metals are negative ions and need to loose electrons to become neutral

What happens at the cathode and why?

Reduction as the metals loose electrons to become ion and need to gain electrons to become neutral

Term for negative electrode

Cathode

Term for positve electrode

Anode