DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 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(like rust) formed by the reaction of these chemicals with one another. The change of copper to patina as described above is a O a. exothermic change O b. endothermic change O c. slow change O d. fast change
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a. exothermic change
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Explanation:endothermic change
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