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    • Mixture

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      • A mixture is formed when two or more elements or compounds are present without being chemically bonded together. The substances which have been mixed are not present in specific amounts or ratios like they are in a compound, e.g. two hydrogen atoms for each oxygen atom in water.
      www.bbc.co.uk/bitesize/articles/zngddp3
  1. A compound is a substance that contains two or more elements chemically combined in a fixed proportion. Compounds may be broken down into simpler substances by chemical means.

  2. Compound: two or more different atoms bonded together. Mixture: two or more different atoms together but not joined. Molecule: two particles (same or different) bonded together. Element: only 1 type of atom; this definition is applied to things both bonded and not to itself.

    • Table of Contents
    • What Is A mixture?
    • General Properties of Mixtures
    • Examples of Mixtures
    • Types of Mixtures
    • Characteristics of Mixtures

    The result formed due to the combination of substances does not lose its individuality nor are they combined chemically. Mixtures are the one product of a mechanical blending or mixing of chemical substances such as elements and compounds.

    Mixtures are made up of two or more substances that are not chemically combined with each other. The properties of mixtures are listed below. 1. The components of a mixture each keep their original properties. 2. The separation of componentscan be easily done. 3. The proportion of the components is variable.

    Crude oil: A mixture of organic compounds (mainly hydrocarbons)
    Seawater: A mixture of various salt and water.
    Air: a mixture of various gases like oxygen, carbon dioxide, nitrogen, argon, neon, etc.
    Ink: A mixture of coloured dyes.

    There are two main types of mixtures: homogeneous mixtures and heterogeneous mixtures. The types of mixtures are discussed below.

    The constituents of a mixture are not present in a fixed ratio. The various characteristics of mixtures are discussed below. 1. There is no chemical force acting between the two or more substances that are mixed, but they still exist together. 2. They can either be heterogeneous or homogeneous in nature. 3. The proportions of the substances vary in...

    • 2 min
  3. Mixtures are physical combinations of two or more elements and/or compounds. Mixtures can be classified as homogeneous or heterogeneous. Elements and compounds are both examples of pure substances. Compounds are substances that are made up of more than one type of atom.

  4. The law of constant composition can be used to distinguish between compounds and mixtures of elements: Compounds have a constant composition; mixtures do not. Water is always 88.8% O and 11.2% H by weight regardless of its source. Brass is an example of a mixture of two elements: copper and zinc.

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  6. A compound is a substance that contains atoms of two or more different elements, chemically joined together. For example, water is a compound of hydrogen and oxygen, chemically joined together....