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.
e. A toxic frog is eaten by a monkey and the monkey soon dies after.