KS3 Y8 Electrolysis

Gap-fill exercise.

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Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button if available to get a clue. Note that you will lose points if you ask for hints or clues!
   Aluminium      aluminium      aluminium oxide      Bauxite      bauxite      bromine gas      can conduct      chloride      chlorine      compounds      electrolysis      elements      Lead      liquid      molten      not conduct      to split   
8Ee Electrolysis

Electricity can be used to split up into . This process is called . Lysis meaning .

Take for example a chemical compound called Lead Bromide. As a solid it will electricity but when heated until it becomes a (that is when it is in the state) it electricity.

Electricity can then be passed through it and the two will separate out. will be formed and also a brown will be given off.

One commercial use of electrolysis is the extraction of from a rock called . contain and when this is heated to a high temperature until molten it will conduct electricity and can be electrolysed. and oxygen is produced.

Another is the extraction of from electrolysis of sodium .

 

 

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