which of the following could indicate a chemical reaction if no evidence of the reaction can be seen? a…

which of the following could indicate a chemical reaction if no evidence of the reaction can be seen? a. change in temperature b. precipitate forming c. gas forming d. color change

which of the following could indicate a chemical reaction if no evidence of the reaction can be seen? a. change in temperature b. precipitate forming c. gas forming d. color change

Answer

Brief Explanations:

A change in temperature can occur during a chemical reaction even when no other visible signs like precipitation, gas - formation, or color - change are present. Precipitate forming, gas forming, and color change are also signs of chemical reactions but are visible. A temperature change can be detected with a thermometer even without any visible evidence.

Answer:

A. Change in temperature