☺ Studying Science ☺ discussion

To recognize a chemical reaction look for the following:
.Effervescence - Production of a gas.
.Creation of a precipitate - a solid when combining two liquids
.Creation of sound or light
.A change in color is a physical change, but can also signal chemical.

pretty much reactions r classified into 5 categories: Decomposition, Combination, Corroding, Displacement and Combustion.

and EJ yu forgot production of Heat

the changing of states is physical...just in case yu get confused

How could I forget Heat!

i dont know!!