Page 161 - The Periodic Table Book
P. 161

Uses                                                 LIFE’S BUILDING BLOCKS

                                                                DNA – short for deoxyribonucleic acid – is like a mini
                                                                database packed with instructions telling your body how to
                                                                work properly. It consists of a chain of molecules and looks
                                          This light, strong    like a twisted ladder called a double helix. The edges are sugar
                                             china contains     molecules linked together by units containing phosphorus.
                                          calcium phosphate.                                                         The Nitrogen Group












                                                                                       Sugar      Phosphate unit




                                                                    These flexible fibres are     Fibre optics
                                                               composed of  phosphate-rich glass.
                                                    Safety match box







                China tea set
                                                                   The striking
                                                                   surface on the
                 Spraying ammonium                                 sides of  the box
                phosphate over burning                             contains phosphorus,
             material cuts off  its supply of                      which ignites the
            oxygen. This extinguishes the fire.                    match upon contact.

                                                           Spraying crops
                                                        with phosphates kills
                                                                                             Fertilizer
                                                         pests, such as insects.













                                         Fire extinguisher
                                                                                             This fertilizer contains
                                                                                            ammonium phosphate to
                                                             Pesticides                         boost plant growth.



           solid forms, including red, white, black, and       Phosphates are present in fine china, and
           violet. The glow seen by Brand was caused           are an important ingredient in fertilizers.
           by white phosphorus reacting with oxygen.           The strips on the sides of safety match
           Phosphorus is mainly found in phosphate             boxes contain pure phosphorus. More
           minerals (in which phosphorus links to              complex phosphorus compounds used
           oxygen), such as apatite, its main ore.             in pesticides are poisonous.                          159





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