Which of the following is a part of Dalton's Atomic Theory?

Question

All atoms of the same element are identical, and atoms of different elements are different.

All matter is made of tiny, indivisible particles that are too small to be seen.

Atoms combine in simple whole number ratios to form compounds.

All of these are correct.

Answer 1

All of these are correct. Dalton's Atomic Theory includes the points that all atoms of the same element are identical, that all matter is made of tiny indivisible particles (atoms), and that atoms combine in simple whole number ratios to form compounds.