Reaction of metals

• Reactivity means


  How vigorously a substance chemically reacts
• How can metals be ordered by their reactivity

  By compared their reactions with water, acid or oxygen

  
• Name is given to list of metals ordered by their reactivity 


  Reactivity
• In terms of metals what makes some metals more reactive than others

  They lose their outer shells electrons more easily
• Why are gold and silver found naturally as elements in the earth 's ores

  They are unreactive

  
• What is an ore

  Rock containing enough metals compound to be economically worth extracting

  
• How are metals less reactive than carbon extracted from ore

  Reduction with oxygen
• I terms of oxygen oxidation is

  Addition of oxygen
• In terms of oxygen reduction is


  The removal of oxygen
• Why can metals like potassium and aluminium not be extracted by reduction with carbon 


  More reactive than carbon
• How are metals more reactive than carbon extracted from their ores


  Electrolysis
• What is displacement reaction


  When more reactive substance takes the place of a less reactive substance in the compound
• What is ionic equation


  Equation which gives some substance as ions and has spectator ions removed
• What type of the substance is given as ions in an ionic equation

  Ionic compounds in solution or liquid
• What is a spectator ion

  Ion that is unchanged in the reaction
• What is half equation


  Equation that shows whether a substance is losing or gaining electrons
• In terms of electrons oxidation is

  Loss of electrons
• I terms of electrons reduction is

  Gain of electrons