Question

air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide. which statement best describes these three components of air? oxygen, nitrogen, and carbon dioxide are all classified as pure substances. oxygen, nitrogen, and carbon dioxide cannot react with another substance. oxygen, nitrogen, and carbon dioxide are chemically bonded to one another. oxygen, nitrogen, and carbon dioxide can be classified as elements.

Explanation:

Oxygen and nitrogen are elements and carbon - dioxide is a compound. All are pure substances. Elements and compounds are pure substances. Oxygen, nitrogen and carbon - dioxide in air are not chemically bonded to each other and they can react with other substances.

Answer:

Oxygen, nitrogen, and carbon dioxide are all classified as pure substances.