How did scientists refute the early atomic theory claim that atoms were indivisible? select all that apply. scientists collided atoms of small mass together, observed reaction products of slightly larger mass, and described this result as fusion. scientists bombarded atoms of large mass with neutrons, observed reaction products with much smaller mass, and described this result as fission. scientists collided atoms of small mass together, observed reaction products with twice the mass of original atoms, and described this result as fusion. scientists bombarded atoms of large mass with neutrons, observed reaction products with slightly smaller mass, and described this result as fusion.