Dalton's atomic theory is based on several assumptions,which are listed below.Which of these assumptions is strictly correct?
I.All atoms of the same element are identical.
II.Atoms are indivisible and unchangeable.
III.Chemical changes are the result of the combination,separation,and rearrangement of atoms.
A)I,II,and III are correct.
B)I and III are correct.
C)II and III are correct.
D)I and II are correct.
E)III is correct.

Question

Quizplus · Accepted Answer

III is strictly correct because it accurately describes chemical reactions without conflicting with modern atomic theory. I is incorrect because isotopes exist, showing that atoms of the same element can have different masses. II is incorrect because atoms can be divided into subatomic particles and can undergo nuclear changes.

Dalton's Atomic Theory Is Based on Several Assumptions,which Are Listed