Final answer:
The statement that is not supported by Dalton's atomic theory is that 'Atoms can be divided into subatomic particles.' Dalton's theory initially claimed atoms were indivisible, but discoveries of subatomic particles have since proven this incorrect.
Step-by-step explanation:
Dalton's atomic theory is supported by many statements, however, when the question asks which statement is not supported by Dalton's atomic theory, the answer is C) Atoms can be divided into subatomic particles. Dalton's atomic theory originally stated that atoms were the smallest indivisible units of matter, which means they could not be divided into smaller parts. This postulate has since been disproven with the discovery of subatomic particles such as protons, neutrons, and electrons.
Atoms as described by modern science are made up of these subatomic particles, and it is these particles that give atoms their identity and properties. The current scientific understanding also reveals that atoms of the same element can have different mass numbers, known as isotopes. Furthermore, using techniques like nuclear fission and fusion, atoms can be transformed, creating or destroying them by converting them into other atoms.
Thus, while Dalton's theory laid the foundation for our understanding of chemical interactions, it has been refined and expanded with new discoveries over time.