AFOQT Practice Test

Which of the following is NOT a characteristic of a mixture?

1. Consists of two or more substances

2. Components are chemically bonded

3. Each component retains its own properties

4. Can vary in composition

The correct answer is: Components are chemically bonded

In the context of mixtures, the defining characteristics include that they consist of two or more substances, the components retain their own properties, and the composition can vary. When examining option B, one can recognize that components of a mixture are not chemically bonded; rather, they maintain their individual characteristics and can be separated by physical means. This is a fundamental distinction between mixtures and compounds, the latter of which do involve a chemical bond between their components. Thus, the assertion that components are chemically bonded does not accurately reflect the nature of mixtures.