Extracting metals

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Across
  1. 3. is a chemical reaction that involves the loosing of electrons
  2. 4. the name of the gas produced when metal reacts with an acid
  3. 5. what is the name of the acid if the formula is HCl
  4. 8. chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
Down
  1. 1. is a chemical reaction that involves the gaining of electrons by one of the atoms involved in the reaction between two chemicals
  2. 2. we use this element to reduce a less reactive metal out of its ore
  3. 6. a naturally occurring solid material from which a metal or valuable mineral can be extracted profitably
  4. 7. is a reaction when more reactive metal displace less reactive metal out of its ore