Copper Wire Reaction with Silver Nitrate

The video demonstrates a chemical reaction between copper wire and silver nitrate. Initially, the copper wire is shiny and flexible, while silver nitrate appears like water. As the reaction progresses, the copper wire loses its shine and turns gray. Over time, silver builds up on the copper wire, forming a crystal-like appearance. This illustrates the deposition of silver on copper through a chemical reaction.

What are the initial properties of the copper wire described in the video?

• It is hard and brittle.

• It is soft and non-conductive.

• It is shiny and bendy.

• It is dull and rigid.

How does silver nitrate appear before the reaction starts?

• It is a gas.

• It looks like water.

• It is a solid crystal.

• It is a thick liquid.

What is the first noticeable change when copper wire is placed in silver nitrate?

• The copper wire starts to melt.

• The copper wire begins to lose its shininess.

• Bubbles form on the copper wire.

• The solution changes color.

What color does the copper wire start to turn during the reaction?

• Gray

• Green

• Red

• Blue

What is the appearance of the copper wire after the reaction is complete?

• It is covered with silver crystals.

• It turns into a liquid.

• It remains shiny and bendy.

• It dissolves completely.

What builds up on the copper wire as a result of the reaction?

• Gold

• Iron

• Copper oxide

• Silver