Respuesta :

change in color, change in temperature , production of light, production of gas , Formation of a precipitate, any of those will work
Hi there!!!

3 signs that indicate a chemical reaction is taking place are:

1.  Temperature change
2. Color change (rusting)
3. Release of gas bubbles
Others would be the formation of precipitate, the release of energy, or change in odor.

Hope this helped u!!

~TRUE BOSS


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