Which of john dalton's contributions are present in the modern atomic model and which were eventually disproven and thus are not part of the modern if you have any questions don't ask in the answer box.

1) All matter is made of atoms. Atoms are indivisible and indestructible.

2) All atoms of a given element are identical in mass and properties

3) Compounds are formed by a combination of two or more different kinds of atoms.

4) A chemical reaction is a rearrangement of atoms.

1 and 2 were proved wrong.

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