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    The World of Metals

                                     4                                        and Non-metals

                                               computational thinking quest

                    Tick ( ) the correct option.
                      1.  A  student designs  an experiment  to  test      3.  Which  statement  best  generalises  the
                         heat conduction using a metal spoon and a            difference between metals and non-metals?
                         wooden spoon in hot water. Which conclusion                                  (Abstract Thinking)
                         correctly reflects the logical outcome?                    (a)   Metals  are always hard and
                                                  (Abstract Thinking)                  non-metals are always soft.

                                (a)   Both spoons conduct heat equally.
                                                                                    (b)   Metals are always solids.

                                (b)   Wood conducts heat better than
                                                                                    (c)   Non-metals are always gases.
                                   metal.
                                                                                    (d)   Metals conduct heat and electricity,
                                (c)   Metal conducts heat faster than
                                                                                       while non-metals  do  not  conduct
                                   wood.
                                                                                       heat and electricity.
                                (d)   Neither  of the  spoons conducts     4.  Observe the table:
                                   heat.                                       Material   Bulb Glows   Sound on Dropping
                                                                                Copper        Yes           Ringing
                      2.  Rohan is helping design a new cooking pan.             Iron         Yes           Ringing
                         He observes that metals like aluminium and              Coal         No              Dull
                         copper are used for cooking, but the handles             X           Yes           Ringing
                         are made of wood or plastic. He also notices
                         that metals heat up quickly, while wood              Identify the material 'X':
                         does not.                                                                  (Pattern Recognition)
                         Which concept best explains why metals are                 (a)   Rubber        (b)  Plastic
                         used for making the body of the utensil?                   (c)   Aluminium     (d)  Wood
                                                  (Abstract Thinking)
                                                                           5.  A student observes the following properties of
                                (a)   Colour
                                                                              a material:
                                (b)  Heat conductivity                        •  It is shiny and hard.

                                (c)   Shape                                   •  It can be drawn into wires.
                                                                              •  It produces a ringing sound when struck.
                                (d)  Cost
                                                                              •  It allows electricity to pass through it.

                                                                                 The World of Metals and Non-metals   65

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