Sodium is a silvery-white colored metal with a melting point of97.72 degrees C.

Question

Sodium is a silvery-white colored metal with a melting point of97.72 degrees C. It reacts violently with water and withoxygen.  
    Which of the following properties are chemical?List all that apply. a)melts at 97.72 degrees C b)reacts with water c) reactswith oxygen d) metal e) silvery-whitecolored        I think my teacher threw one of these in asa trick question. I know b) and c) are chemical and a) and e)are physical. However, I am unsure about d). Iappreciate any help! Thank you :) a)melts at 97.72 degrees C b)reacts with water c) reactswith oxygen d) metal e) silvery-whitecolored        I think my teacher threw one of these in asa trick question. I know b) and c) are chemical and a) and e)are physical. However, I am unsure about d). Iappreciate any help! Thank you :)

Explanation / Answer

I agree with your answers for a, b, c, and e.  I think that "metal" is both a chemical and physical property.  This is because the fact that it is a metal implies that it is a good conductor, that it can be flattened into a thin sheet, that it can be made into a wire, etc. which are all physical properties.  It also implies that when it ionizes it has a positive charge, which is a chemical property.  So I would have to say that (d) is both.

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