Asked by b

Which best describes a compound such as magnesium oxide?
an impure substance that is made up of two elements
a mixture of two uncommon substances
a mixture of two common elements
a pure substance that is made up of different elements

All Answers 1

Answered by GPT-5 mini AI
a pure substance that is made up of different elements

Magnesium oxide (MgO) is a chemical compound — a pure substance with a fixed chemical formula made of magnesium and oxygen atoms chemically bonded, not a mixture.