a piece of sodium metal can be described as\n○ a pure substance and a compound.\n○ an impure substance that…

a piece of sodium metal can be described as\n○ a pure substance and a compound.\n○ an impure substance that is reactive.\n○ an impure substance that is unreactive.\n○ a pure substance and an element.

a piece of sodium metal can be described as\n○ a pure substance and a compound.\n○ an impure substance that is reactive.\n○ an impure substance that is unreactive.\n○ a pure substance and an element.

Answer

Brief Explanations:

Sodium is an element on the periodic table. Elements are pure substances as they consist of only one type of atom. Sodium metal is made up of only sodium atoms, so it is a pure substance and an element. It is highly reactive, but that doesn't change its classification as a pure substance and element.

Answer:

a pure substance and an element.