which is the most important question for deciding if a chemical reaction has occurred?\nwas there a change…
which is the most important question for deciding if a chemical reaction has occurred?\nwas there a change in the size?\nwas any heat energy given off?\nwhat is the density of the substance?\nwhat is the texture of the substance?
Answer
Brief Explanations:
Un cambio en el tamaño, la densidad o la textura pueden ser cambios físicos. La liberación de energía en forma de calor es un indicador común de una reacción química.
Answer:
Was any heat energy given off?