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.

lol idk man i guess u gotta ask bill nye the science guy

girl imma just put my comment here because i need a couple point okurrttt

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.