The Statue of Liberty is made of copper metal. Copper metal has the physical property of being orange in color. Over years of being exposed to moist air, the surface of the statue has begun to form a green coating. Is the green coating the product of a physical or chemical change? Explain how the green layer is formed.

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.