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

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure?1 Mark
Question
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
✓

Answer

  • Physical change: Vaporisation (water changes to water vapour or steam)
  • Chemical change: Electrolysis (i.e.water forms hydrogen and oxygen)

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