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CBSE Class 10 Answered

What are the observations that helps us to determine whether a chemical reaction has taken place explain with examples.  
Asked by ABHILASHA | 30 Mar, 2018, 12:58: PM
answered-by-expert Expert Answer
Following are the observations to determine whether the chemical reaction has taken place or not:
 
  • Change in colou
  • Evolution of gas
  • Changee in temperature
  • Formation of precipitate
  • Change in pH
Answered by Varsha | 31 Mar, 2018, 12:28: PM

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