OXIDATION

                                         

WHY DO BANANAS TURN BLACK?

Because bananas contain a hormone that changes colour when it is oxidised.

WHY DO PAPERS TURN YELLOW?

https://www.youtube.com/watch?v=htv35U_t5Xo

AUDIO page 62

https://drive.google.com/file/d/1BS4CTPsdYJzn89E1fQnUIRGhq-f_TuwG/view?usp=sharing