Chemistry: Classification of Matter

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What is a homogeneous mixture?

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A homogeneous mixture is a mixture that has a uniform composition throughout. Examples include solutions like saltwater or air.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture that does not have a uniform composition and the different components can be seen. Examples include salad or oil and water.

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What is a physical property?

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A physical property is a characteristic of a substance that can be observed or measured without changing its identity. Examples include color, boiling point, and density.

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What is an example of a chemical property?

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A chemical property is a characteristic that can only be observed during a chemical reaction. An example is flammability.

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What is an element?

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An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen, oxygen, and gold.

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What is a compound?

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A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and carbon dioxide (CO2).

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What is a mixture?

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A mixture is a combination of two or more substances that are not chemically bonded. Mixtures can be homogeneous or heterogeneous.

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What is the difference between an element and a compound?

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An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

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What is a molecule?

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A molecule is the smallest unit of a chemical compound that retains its chemical properties, consisting of two or more atoms bonded together.

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What is the particle view of matter?

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The particle view of matter describes how all matter is made up of tiny particles (atoms and molecules) that are in constant motion.