Element, Compound, Mixture

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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 aluminum (Al).

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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. An example is water (H2O), which is made of hydrogen and oxygen.

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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. The individual substances retain their own properties.

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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. An example is saltwater, where the salt is evenly distributed.

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What is a Heterogeneous Mixture?

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A heterogeneous mixture is a mixture where the components are not uniformly distributed. An example is a salad, where you can see the different ingredients.

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Is oil and water a homogeneous or heterogeneous mixture?

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Oil and water form a heterogeneous mixture because they do not mix uniformly.

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Is aluminum (Al) an element, compound, or mixture?

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Aluminum (Al) is an element.

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Is honey a homogeneous or heterogeneous mixture?

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Honey is considered a homogeneous mixture because it has a consistent composition throughout.

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Are rocks and sand a homogeneous or heterogeneous mixture?

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Rocks and sand form a heterogeneous mixture because the different components can be easily distinguished.

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What is the chemical formula for sugar (sucrose)?

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The chemical formula for sugar (sucrose) is C6H12O6.