8.6A Classifying Mater - Flashcardizz

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What is a pure substance?

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A material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

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What is a compound?

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A substance formed when two or more elements are chemically bonded together. Example: Water (H2O).

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What is a mixture?

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A combination of two or more substances that are not chemically bonded. Example: Salad.

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What is an element?

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A pure substance that cannot be broken down into simpler substances by chemical means. Examples include oxygen (O) and gold (Au).

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What is the difference between a compound and a mixture?

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A compound is a chemical combination of elements, while a mixture is a physical combination of substances.

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What is a homogeneous mixture?

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A mixture that has a uniform composition throughout. Example: Saltwater.

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What is a heterogeneous mixture?

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A mixture that consists of visibly different substances or phases. Example: A salad.

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What does it mean for a substance to have a constant composition?

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It means that the substance's chemical makeup does not change, regardless of the sample size.

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What is the definition of matter?

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Anything that has mass and takes up space.

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What is an example of a pure substance that is a compound?

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Sugar (C12H22O11) is a pure substance that is a compound.