Question

which of the following tells you that a chemical change may have occurred​

Answer 1

Answer:

The following can indicate that a chemical change has taken place, although this evidence is not conclusive: Change of odor. Change of color (for example, silver to reddish-brown when iron rusts). Change in temperature or energy, such as the production (exothermic) or loss (endothermic) of heat.

Answer 2

Where are the following??

I think so the question is incomplete..

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