Chemistry

Question

Which of the following are considered pure substances? Mixtures Elements Solutions Compounds

2 Answer

  • Elements and compounds are considered pure substances.
  • Answer:  Elements  and Compounds

    Explanation:

    Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air

    Element is a pure substance which is composed of atoms of similar elements. It can not be decomposed into simpler constituents using chemical reactions.Example: iron [tex](Fe)[/tex]

    Solution is a homogeneous mixture of a solute and a solvent. Example: sugar dissolved in water

    Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: carbon dioxide [tex](CO_2)[/tex]  

    Thus Elements  and Compounds are pure substances.

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