Question

what is the change in colour ​

Answer 1

Answer:

Color changes from blue to light green. Copper reacts with oxygen, H2O and CO2 to give copper carbonate, which changes color from brown to blue or blue green. Rusting, blackening of surfaces of cut vegetables and fruits are other examples of change of color in a chemical reaction

hope it will helpful for you

please mark me as brainliest

Answer 2

The changing of colour of a substance is not necessarily an indicator of a Chemical change. For example, changing the colour of a metal does not change its physical properties. However, in a Chemical reaction, colour changeis usually an indicator that a reaction is occurring.