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Question

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Elements combine in a fixed proportion to form _____.


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Solution

  1. Compounds: A compound is a pure substance that is made up of two or more elements chemically combined in a fixed proportion by mass.
  2. Example: Water is represented as H2O in which hydrogen and oxygen are present in the fixed proportion of 1:8 by mass i.e., the atomic mass of H=1u,O=16u.

Therefore, Water has the formula H2O. Hence, 2u:16u=1:8

Therefore, Elements combine in a fixed proportion to form compounds.


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