ECM FLASHCARD REVIEW

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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. For example, water (H2O) is a compound made of hydrogen and oxygen.

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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 (H), oxygen (O), and carbon (C).

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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 a homogeneous mixture?

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A homogeneous mixture is a mixture in which the composition is uniform throughout. An example is saltwater.

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What is a heterogeneous mixture?

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A heterogeneous mixture is a mixture in which the composition is not uniform throughout. An example is a salad.

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What is a solute?

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A solute is a substance that is dissolved in a solvent to form a solution. For example, salt is the solute in saltwater.

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What is a solvent?

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A solvent is a substance that dissolves a solute to form a solution. Water is often referred to as the universal solvent.

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What is a solution?

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A solution is a homogeneous mixture formed when a solute is dissolved in a solvent.

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What is the difference between a compound and a mixture?

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A compound is made of two or more elements chemically bonded together, while a mixture is a physical combination of substances that can be separated.

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What is an example of a compound?

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An example of a compound is carbon dioxide (CO2), which is made of carbon and oxygen.