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Question

What is a pure substance and a mixture?


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Solution

Pure substances:

  • "Pure substances can be elements or compounds. An element is a form of matter that cannot be broken down by chemical reactions into simpler substances. A compound is a substance composed of two or more different types of elements, chemically combined in a fixed proportion.
  • Examples of pure substances are Iron, Sodium, etc.

Mixtures:

  • A mixture contains more than one substance (element and/or compound) mixed in any proportion.
  • Mixtures can be separated into pure substances using appropriate separation techniques.
  • Examples of mixtures are Muddy water, sugar solution, etc.

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