Answer
You need no formulas for this question
Work Step by Step
This question deals with classifying substances as pure substances, a heterogeneous mixture, or a homogeneous mixture. The specific substance is magnesium. Magnesium is an element, meaning it is a pure substance. A pure substance has distinct chemical properties that do not vary from sample to sample. Since magnesium is an element, and elements are pure substances, magnesium is a pure substance.