Here's a breakdown:

* Electrolysis: A process where an electric current is passed through a substance (usually an ionic compound or solution) to cause a chemical change. This change involves breaking down the substance into its constituent elements or simpler compounds.

Key points about electrolysis:

* Ionic compounds: Electrolysis typically works on substances with ions (charged particles) that can move freely.

* Electrodes: The electric current is passed through the substance using electrodes (typically metal).

* Redox reactions: The chemical change during electrolysis involves oxidation (loss of electrons) and reduction (gain of electrons) at the electrodes.

Examples of Electrolysis:

* Electroplating: Depositing a thin layer of metal onto a surface using electrolysis.

* Production of chlorine and sodium hydroxide: Electrolysis of brine (salt water) is a common industrial process.

* Refining of metals: Impurities can be removed from metals using electrolysis.