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Is Matter Around Us Pure ? — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure ?1 Mark
Question
Which of the following is true?
✓

Answer

  1. Compounds have fixed composition.
Explanation:
A chemical compound is a new substance that forms when atoms of two or more elements react with one another. A compound that results from a chemical reaction always has a unique and fixed chemical composition. The substances in the compound can be separated from one another only by another chemical reaction.

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