Question

1. how did the discoveries of thomson and rutherford change daltons atomic theory?

atoms of one element can not only rearrange but can change into atoms of another element through chemical reactions
atoms are not indivisible, but they are made up of smaller subatomic particles.
the atomic theory did not change with their discoveries.
all matter is not made of atoms.

Explanation:

Dalton's atomic theory stated that atoms are indivisible. Thomson discovered electrons (a subatomic particle) and Rutherford discovered the nucleus (another aspect of atomic structure). Their discoveries showed that atoms are made of smaller subatomic particles, thus disproving the indivisibility part of Dalton's theory.

Answer:

Atoms are not indivisible, but they are made up of smaller subatomic particles.