Correct, the idea of the atom was not first proposed by John Dalton. The concept of the atom traces back to ancient Greece, specifically to the philosopher Democritus in the 5th century BCE. Democritus hypothesized that all matter was composed of tiny, indivisible particles called atoms. However, it was John Dalton, an English chemist, who in the early 19th century developed a more modern and systematic understanding of the atom. Dalton's atomic theory, published in 1808, brought together various experimental observations and proposed that elements are composed of indivisible particles called atoms, which combine to form compounds in fixed ratios. So, the correct answer to your question is False.
