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Ch.1 - Introduction: Matter, Energy, and Measurement
Chapter 1, Problem 14c

Classify each of the following as a pure substance or a mixture. If a mixture, indicate whether it is homogeneous or heterogeneous: (c) diamond

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Pure Substances

A pure substance consists of a single type of particle and has a uniform composition throughout. It can be an element, like oxygen or gold, or a compound, such as water or carbon dioxide. Pure substances have distinct physical and chemical properties that do not change regardless of the sample size.
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Mixtures

Mixtures are combinations of two or more substances that retain their individual properties. They can be classified as homogeneous, where the components are evenly distributed (like saltwater), or heterogeneous, where the components are not uniformly mixed (like a salad). The properties of mixtures can vary depending on the proportions of the components.
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Diamond as a Pure Substance

Diamond is classified as a pure substance because it is composed entirely of carbon atoms arranged in a specific crystalline structure. This uniformity gives diamond its distinct properties, such as hardness and clarity, making it different from mixtures, which have variable compositions and properties.
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