Choose all examples of chemical changes?

A.The planet Saturn is yellow in color.
B.The Statue of Liberty oxidized and changed in color from a rich bronze to a worn green color.
C.A pond's pH levels increased by 0.3 and caused several species inhabiting the pond to die.
D.A pair of bolt cutters is used to break a chain.
E.A toxic frog is eaten by a monkey and the monkey soon dies after.
F.A cup of water is left out on a cold winter day and the water freezes.

B. The Statue of Liberty oxidized and changed in color from a rich bronze to a worn green color.

C. A pond's pH levels increased by 0.3 and caused several species inhabiting the pond to die.