A piece of copper wire is placed in a beaker containing a solution of silver nitrate. Which statement is an observation? A. A chemical reaction is taking place. B. Silver metal forms on the copper wire. C. The solution begins to turn blue. D. Silver ions displace copper atoms.

Option C: The solution begins to turn blue

Explanation:

When a copper wire is placed in a beaker containing a solution of silver nitrate(AgNO3), the copper (Cu) will reduce the positive silver ions (Ag+) to metallic silver (Ag). In this same process, Copper (Cu) is oxidized to produce Copper II ions (Cu2+).

The reaction will continue to progress and silver (Ag) crystals will begin to form on the Copper (Cu) wire and thus, we will observe that the solution becomes blue as a result of the formation of copper II (Cu2+) ions.

This is a single replacement reaction.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

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