cells and batteries

• how can we produce electricity

  by taking two different metals and placing them into an electrolyte
• what is an electrolyte

  a solution that can conduct electricity
• what will happen to the cell eventually

  a cell can produce electricity for a certain period of time. eventually the chemicals in the cell will run out and the reaction will stop
• what does a cell's production of electricity depend on

  if using metals with different reactivities or not
• relationship of the difference between the reactivity of metals and the pd produced

  the greater the difference between the reactivity of metals, the greater the pd produced
• what else effects the pd

  the electrolyte
• what is a battery

  contains two or more cells connected in series to produce a greater voltage
• what are non rechargable batteries

  in alkaline batteries at some point all the reactants in the batteries will run out and no more electricity is produced. there is no way that we can reverse these reactions thats why the cannot be recharged.
• what are rechargable batteries?

  we can reverse the chemical reactions when applying a current and recharge them
• disadvantages of rechargable batteries


  runout and need to be recharged

  can store less electricity the more charging cycles they go through and eventually need to be replaced

  if not manufactured correctly can catch fire
• advantages of rechargable batteries

  no dangerous fuels are required

  produce greater pd than a hydrogen fuel cell