Based on the definition of a pure substance given in your book, which of the following could be classified as pure substances?

Question

Quizplus · Accepted Answer

A pure substance is defined as a substance that consists of only one type of atom or molecule. The air you breathe (A) is a mixture of various gases, so it is not a pure substance. Similarly, water from a water fountain (B) may contain impurities, so it also cannot be classified as a pure substance. A milkshake (C) and chicken noodle soup (D) are both mixtures of different substances, so they are not pure substances either. However, a diamond (E) is a pure substance because it is made up of only one type of atom (carbon).

Based on the Definition of a Pure Substance Given in Your