Guse the divergence theorem to calculate the flux of the vector fields through the surface s given by the sphere of radius a centered at the origin with outwards orientation. be sure that you are able to explain your answers geometrically

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.