Silver is a white metal that is an excellent conductor. silver tarnishes when exposed to air and light. the density of silver is 10.49 g/cm3. the melting point is 962c and the boiling point is 2000c. a chemical property of silver is a/ that it is a conductor b/ melting point c/ density d/ tarnishes in air

Answer is: tarnishes in air.

A chemical property is any of a substance properties that is obvious after chemical reaction.

Chemical reaction of silver in air:  4Ag + 2H₂S + O₂ → 2Ag₂S (tarnish) + 2H₂O.

Melting point, density and conduction of electricity are physical property. Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change.

yep tarnishes in air is correct because i was on USA TEST PREP and it popped this question and i got it write.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .