Homogeneous and Heterogeneous Mixtures

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Mixture Noun

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[miks-cher]

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Mixture

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A substance made by combining two or more materials that are not chemically bonded and retain their individual properties.

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Example: This diagram shows salt and water, two separate substances, being combined and stirred to form a solution, a type of homogeneous mixture.

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Compound Noun

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[kom-pound]

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Compound

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A substance formed when two or more chemical elements are chemically bonded together in a fixed ratio by mass.

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Example: This diagram shows a molecule of the compound carbon dioxide (CO₂), where one carbon atom is chemically bonded to two oxygen atoms.

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Homogeneous Mixture Noun

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[hoh-moh-jee-nee-uhs miks-cher]

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Homogeneous Mixture

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A mixture where components are evenly distributed, resulting in a uniform composition and appearance throughout the entire substance.

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Example: This diagram shows a solution, a type of homogeneous mixture, where solute particles are evenly distributed throughout the solvent, creating a uniform composition.

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Heterogeneous Mixture Noun

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[het-er-uh-jee-nee-uhs miks-cher]

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Heterogeneous Mixture

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A mixture with a non-uniform composition where the individual substances remain distinct and are often visibly separate.

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Example: This image shows that in heterogeneous mixtures like tacos, pizza, or a salad, you can easily see the different, separate parts that make them up.

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Solution Noun

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[suh-loo-shun]

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Solution

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A homogeneous mixture composed of two or more substances with particles so small they cannot be seen or separated.

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Example: This diagram shows a solution where solute particles (pink) are completely dissolved and evenly mixed with solvent particles (blue), creating a uniform homogeneous mixture.

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Suspension Noun

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[suh-spen-shun]

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Suspension

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A heterogeneous mixture containing solid particles sufficiently large for sedimentation, which can be seen and filtered out.

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Example: This diagram shows that a suspension is a heterogeneous mixture, like sand in water, where solid particles are temporarily mixed but will eventually settle to the bottom.

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Colloid Noun

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[kol-oid]

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Colloid

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A mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance without settling.

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Example: This diagram shows that a colloid is a mixture formed by combining a smaller amount of a 'dispersed phase' with a larger amount of a 'dispersion medium'.

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Homogenization Noun

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[huh-moj-uh-nuh-zey-shun]

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Homogenization

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The process of reducing the size of particles in a fluid to make them uniformly small and evenly distributed.

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Example: This diagram shows milk before and after homogenization. The process breaks large fat globules into smaller particles, distributing them evenly to create a stable, homogeneous mixture.