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Classification of Matter - General Chemistry

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Terms in this set (20)

  • What is chemistry?

    Chemistry is the study of matter and the changes it undergoes, with the atom being its basic functional unit.

  • Define matter.

    Matter is anything that occupies space and has mass.

  • What are the three main types of matter classification?

    Elements, compounds, and mixtures.

  • What is an element?

    An element is the simplest type of matter composed of only one kind of atom.

  • What is a compound?

    A compound is matter composed of two or more different elements chemically bonded together.

  • What is a mixture?

    A mixture is matter composed of elements and/or compounds physically mixed together.

  • How can compounds be separated?

    Compounds can only be broken down by chemical means.

  • What is the difference between homogeneous and heterogeneous mixtures?

    Homogeneous mixtures have uniform composition; heterogeneous mixtures do not.

  • Is gasoline a pure substance or a mixture?

    Gasoline is a mixture, not a pure substance.

  • Is milk a homogeneous or heterogeneous mixture?

    Milk is an example of a homogeneous mixture.

  • Is concrete a homogeneous mixture?

    No, concrete is a heterogeneous mixture.

  • Which of the following is a homogeneous mixture: soda, smog, trail mix, bowl of cereal with milk, or pure oxygen and nitrogen gas?

    Soda is a homogeneous mixture.

  • Which of the following is a homogeneous mixture: chicken noodle soup, coffee, sand (unfiltered), fruit salad, or seawater (unfiltered)?

    Coffee is a homogeneous mixture.

  • Classify ammonia (NH3): element, compound, or mixture?

    Ammonia (NH3) is a compound.

  • Classify a gold bar: element, compound, or mixture?

    A gold bar is an element.

  • Classify orange juice: element, compound, or mixture?

    Orange juice is a mixture.

  • Classify wine: element, compound, or mixture?

    Wine is a mixture.

  • Classify saline solution: element, compound, or mixture?

    Saline solution is a mixture.

  • What is meant by 'single composition' in matter classification?

    Single composition means the substance has a uniform and definite composition, like elements and compounds.

  • What does 'variable composition' mean in mixtures?

    Variable composition means the proportions of components can vary, typical of mixtures.