Multiple choice Which of the following is not a postulate of Dalton’s atomic theory? Matter is made up of tiny particles called atoms. An atom comprises of smaller particles, which are neutrons, protons and electrons. Atoms can neither be created nor destroyed. Atoms of different elements have different masses and chemical properties. Reveal answer Fill a bubble to check yourself B Correct answer Explanation Option (2) is correct. Dalton stated that atoms are indivisible. He did not propose the existence of sub-atomic particles.