Question

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

Answer 1

A drop of iquid mercury is D.  a pure substance and an element. This is because mercury is an element which exists as liquid in the normal or standard conditions. It is a metal that is toxic to all environments. It is pure because it is composed only of one kind of substance.

Answer 2

Answer: D) a pure substance and an element

Explanation:

Mercury is an element which is composed of similar atoms and is a pure substance.

Element is a pure substance which is composed of atoms of similar elements.

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Mixtures are impure substances and are heterogeneous materials as they do not have uniform composition and the components are not evenly distributed throughout the material.