asked 70.9k views
3 votes
Copper turns a green-brown when it is exposed to oxygen in the air.

What chemical property of oxygen causes this effect?

A.) it's mass
B.) its reactivity
C.) its flammability
D.) its volume

asked
User Imrank
by
7.3k points

1 Answer

7 votes

The answer is B.) its reactivity

answered
User Aginsburg
by
7.8k points
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