The images show two unrelated events occurring at separate times.

Event 1: A beaker pours a clear liquid into a second beaker, also full of clear liquid, creating an orange liquid. A glass holds clear liquid, with some areas of dark blue liquid surrounded by lighter blue liquid.

Which event is most likely an example of a chemical reaction?

Event 2 because the blue color mixes throughout the liquid.

Event 1 because there is a color change.

Event 2 because the temperature is dropping in the liquid.

Event 1 because there is a release of heat and light.