Can you put these in the right order?

 Activity 1. All in order DO TRY THIS AT HOME  (it's quite safe !) Prepare 18 Postit notes or similar pieces of card. Squares are bestGive each Postit a symbol of one of the first 18 elements in the periodic tableYou need to know the name of each element as well as its symbol. Write the name on the backFind a partner&n...