Chemistry / Physical & Chemical Properties
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Solution: Scooby Doo went out to look at his Doghouse but he discovere...

Question

Scooby Doo went out to look at his Doghouse but he discovered that the roof which was made of a sheet of copper metal had changed from its original shiny metallic “penny” bright color to a shade of deep green. The original copper metal had gradually been covered by a green patina which is usually a mixture of copper chlorides, copper carbonates and copper sulfides. Is the observation that this patina forms a chemical or a physical property?

 

a. chemical

b. physical

c. both

d. neither

e. not enough information given to make a determination