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Classifying Matter: Elements, Compounds, and Mixtures

Learn about the different types of matter - elements, compounds, and mixtures. Understand their properties, composition, and how they can be separated. Explore the chemical and physical aspects of each category. Chemistry education made easy!

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Classifying Matter: Elements, Compounds, and Mixtures

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  1. Classifying Matter:Elements, Compounds, and Mixtures

  2. Pure Substances • A sample of matter that has definite chemical and physical properties. Atoms Elements Compounds Molecules

  3. Elements • pure substance that cannot be separated into simpler substance by physical or chemical means.

  4. Compounds Pure substance composed of two or more different elements joined by chemical bonds. • Made of elements in a specific ratio that is always the same • Has a chemical formula • Can only be separated by chemical means, not physically H2O NaCl CO2

  5. Mixtures • A combination of two or more pure substances that are not chemically combined. • substances held together by physical forces, not chemical • No chemical change takes place • Each item retains its properties in the mixture • They can be separated physically Chem4kids.com

  6. Mixtures vs. Compounds http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/elements_com_mix_6.shtml

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