wh did statue of liberty change color

 you may know her for fer famous green hue but this symbol of freedom wasn't  always that color in fact when she was unveiled in 1886 lady liberty was a shiny brownsish red just like a penny that because both the statue and the coin are made out of copper  by 1906 here  metal had oxidized and covering the figuer in green pationa Oxidation occure oxide waater interaact with the  molecules in copper forming copper oxide and coating the surface with the blue green color this can also hannen with things like  watering cans bicycles  chains and barbecue grills which will turn a dark red or brown otherwise know as rust. form called book popular science kids