Answer:
Reacts with oxygen
Explanation:
Hello,
In this case, we refer to chemical properties as those changing the composition of the initial substances, in such a way, for the given options, it is easy to notice that the boiling point is physical property because it changes its state, not the composition. Moreover, the silvery color is also a physical property in terms of the appearance as well as the liquid at room temperature because it is the segregation state at room temperature.
Therefore, since a chemical reaction is carried out when mercury reacts with oxygen that is the chemical property as the mercury turns into mercury (II) oxide:
[tex]2Hg+O_2\rightarrow 2HgO[/tex]
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