Question

question 4
1 pts
which of the following formations is a physical property of copper?

• can be stretched into wire.
• becomes a deep blue solution when in contact with ammonia.
• forms a green copper carbonate compound forms when in contact with moist air.
• forms a new substance when combined with nitric acid.

Explanation:

A physical property is a characteristic of a substance that can be observed or measured without changing the substance's chemical identity. Stretching copper into wire (ductility) is a physical change, as the copper remains copper. The other options involve chemical reactions that create new substances, which are chemical properties.

Answer:

Can be stretched into wire.