Question

The chemical formula for emerald is Be3Al2(SiO3)6. An emerald can be described as

Answer 1

a pure substance because it is a compound

Step-by-step explanation:

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Answer 2

An emerald can be described as a pure substance because it is a compound. Compounds are considered pure substances because they cannot be broken apart by any mechanical or physical process. A compound is any molecule that is made from two or more atoms of the same or different elements. Water is also considered a pure substance. it is made up of one oxygen atom and two hydrogen atoms. A water molecule cannot be separated by any mechanical or physical process.