Scelta multipla
Which of the following is NOT an example of a heterogeneous mixture?
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1. Intro to General Chemistry
Classification of Matter
Scelta multipla
Which of the following is a characteristic of all mixtures?
A
Their components lose their individual properties.
B
They have a fixed composition.
C
They are always homogeneous.
D
Their components can be separated by physical means.
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Understand the definition of a mixture: A mixture is a combination of two or more substances where each substance retains its own chemical properties.
Recall that mixtures do not have a fixed composition; the ratio of components can vary.
Recognize that mixtures can be either homogeneous (uniform throughout) or heterogeneous (not uniform), so they are not always homogeneous.
Note that in mixtures, the components do not lose their individual properties; each component remains chemically unchanged.
Conclude that a key characteristic of mixtures is that their components can be separated by physical means, such as filtration, distillation, or decantation.
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