Practice 2-Elements, Compounds, & Mixtures 8.6A

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What is a compound?

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A compound is a substance formed when two or more elements chemically bond together in a fixed ratio. 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. The individual components retain their own properties.

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What is a homogeneous mixture?

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A homogeneous mixture is a mixture in which the components are evenly distributed and not easily distinguishable. 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 components are not evenly distributed and can be easily distinguished. An example is a salad.

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How can you identify a compound in a model?

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A compound model typically shows different types of atoms bonded together in a fixed ratio, often represented by distinct colors or shapes.

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What is the difference between elements and compounds?

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Elements are pure substances that cannot be broken down into simpler substances, while compounds are made up of two or more elements chemically combined.

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What is an example of a compound?

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Water (H2O) is an example of a compound, consisting of two hydrogen atoms and one oxygen atom.

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What is an example of a homogeneous mixture?

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An example of a homogeneous mixture is vinegar, where the acetic acid is evenly distributed throughout the water.

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What is an example of a heterogeneous mixture?

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An example of a heterogeneous mixture is a fruit salad, where the different fruits can be seen and separated.

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What does it mean for a mixture to be evenly distributed?

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When a mixture is evenly distributed, the different components are uniformly mixed, making it difficult to identify individual substances.