The elements on the periodic table are arranged in order of increasing
(1) atomic mass
(2) atomic number
(3) first ionization energy
(4) selected oxidation state

Between 2014 and 2016, more than 25,000 children in flint, michigan, drank water that was contaminated with lead from lead pipes. during this time, the city claimed the water was safe to drink. which of these actions could the city have taken to ensure that the drinking water was free from lead?

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Which of these is a physical property