electrochemistry

Redox reaction

A reaction involving the transfer of electrons

Oxidation

The loss of electrons

Reduction

The gain of electrons

Oxidising agent

a substance that accepts electrons

Reducing agent

A substance that donates electrons

Anode

The electrode where oxidation takes place

Cathode

The electrode where reduction takes place

Electrolyte

A substance that can conduct electricity due to the presence of free(mobile) ions when molten or dissolved in solution

Galvanic cell

An electrochemical cell that converts the chemical energy of a spontaneous redox reaction into electrical energy

Describe

Movement of ions through solutions

Electron flow in external circuit

Observations in half cells

Function of salt bridge

Completes the circuit and maintains the electrical neutrality in half cells

Electrolytic cell

An electrochemical cell that uses electrical energy to cause a non spontaneous redox reaction to occur. Thus electrical energy is converted into chemical energy