DIRECTIONS: Read the passage (s) given below and answer the questions that follow Passage - 1 Copper statues exposed to carbon dioxide and water in the air become coated with patina. The patina is not copper, it is not carbon dioxide, and not water. It is a new substance formed by the reaction of these chemicals with one another. The change described above is a

• A. reversible change
• B. irreversible change
• C.  Electrons in a beam are moving due south.
• D. contraction