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SAI International School
                                                     Class – VIII

                                               Subject – Chemistry
                        Topic – CHEMICAL EFFECTS OF ELECTRIC CURRENT



                                               CONCEPT MAPPING


                                               HOME ASSIGNMENT



                                           Concept – Electrodes and Ions


           Q1.  Why it is advised not to touch electrical appliances with wet hands?                     1

           Q2     Define an Electrode.                                                                   1

           Q3     Is it safe for the electrician to carry out electrical repairs outdoors during heavy  1
                  downpour? Explain.

           Q4     What is the difference between a cathode and an anode?                                 1

           Q5     How are the ions formed? Mention the types of ions formed.                             1




                                                Concept – Electrolytes

           Q1.  Name two liquids which conduct electricity and two liquids which do not conduct  1
                  electricity.

           Q2     Which of the two is a better conductor of electricity: drinking water (tap water)  1
                  or sea water? Give reason for your answer.

           Q3     Does  pure  water  conduct  electricity?  If  not,  what  can  we  do  to  make  it  1
                  conducting?

           Q4     Define the term ‘Electrolyte’.                                                         1


           Q5     What do you mean by an electric circuit?                                               1

           Q6     What is meant by electric current?                                                     1

           Q7     Differentiate strong and weak electrolytes.                                            1









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