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One of the signs of a chemical reaction taking place is:


Sagot :

Answer:

Precipitates indication release of gas

Or just vapor-again indictaing release of gas

Change in melting/boiling point, change in pH

Change in temperature

Answer:

  • formation of precipitate
  • change in state
  • change in colour
  • evolution of a gas
  • change in temperature

Explanation:

these signs show that the chemical reaction has taken place.