Question

Air a mixture because it has 2 or more substances (compounds and molecules) that are physically mixed together, but they are not chemically bonded. The parts can be separated.

a) True
b) False

Answer 1

Air is a mixture because it contains multiple substances such as nitrogen, oxygen, argon, and carbon dioxide that are physically blended and can be separated, which retains each substance's properties. Hence, the student's statement is True.

Step-by-step explanation:

Is air a mixture because it has 2 or more substances (compounds and molecules) that are physically mixed together but are not chemically bonded, and the parts can be separated? The answer to this is a) True.

Air is indeed a mixture, combining elements like nitrogen, oxygen, argon, and compounds such as carbon dioxide. These are mixed in varying proportions and can be separated by physical means. A key characteristic of a mixture is that the substances retain their individual properties and are not in a fixed ratio, unlike compounds.

The fact that air's composition can vary depending on the location and that its constituents—like nitrogen, oxygen, and carbon dioxide—are not chemically bonded to each other further supports the classification of air as a mixture. In the case of air, each gas maintains its chemical identity and can be isolated from the mixture, confirming that air is a mixture.