What can a drop of liquid mercury be described as? a pure substance and a compound an impure substance that is reactive an impure substance that is unreactive a pure substance and an element

Correct Answer: a pure substance and an element

Reason:

In a drop of mercury (Hg) generally there is not impurity present. Hence, it is referred as pure substance. Further, element refers to a chemical substance comprising of only one type of atom. In present case, since there is only one type of atom i. e. Hg. Hence, it is refereed as an Element.

A drop of mercury can be defined as a pure substance and and element.