what are 3 signs that we talked about in virtual lesson that a chemical reaction is happening?\n gas…

what are 3 signs that we talked about in virtual lesson that a chemical reaction is happening?\n gas formation\n sound\n ph change\n beaker moving\n odor
Answer
Brief Explanations:
Gas formation indicates new gaseous products in a chemical reaction. pH change shows a change in the acidity or basicity of substances involved. Odor can be a sign of new compounds with distinct smells being formed. Sound and beaker - moving are not typical definitive signs of a chemical reaction.
Answer:
gas formation, pH change, odor