Question
The chemical formula for an emerald is Be3Al2(SiO3)6. An emerald can be described as
a pure substance because it is a compound.
a pure substance because it is an element.
an impure substance because it is chemically combined.
an impure substance because it is a mixture.
a pure substance because it is a compound.
a pure substance because it is an element.
an impure substance because it is chemically combined.
an impure substance because it is a mixture.
Answers
GPT-4o mini
An emerald can be described as **a pure substance because it is a compound**. It is made up of a specific chemical formula (Be3Al2(SiO3)6), which indicates that it is a compound composed of beryllium, aluminum, silicon, and oxygen in a fixed ratio. Since it has a defined composition and consistent properties throughout, it is classified as a pure substance.