Question

I NEED HELP PLEASE!!!!!

John Dalton's atomic theory contains 4 postulates. Which postulate(s) still hold(s) true today. Mark all that apply. *

Atoms of different elements can combine physically and chemically.
Atoms are indivisible.
Chemical reactions occur when atoms are joined or separated.
Atoms of the same element are identical

Answer 1

Atoms of different elements can combine physically and chemically.
Chemical reactions occur when atoms are joined or separated.

Answer 2

atoms can be divided more so thats not true. atoms from the same element arent all nesacarly identical because of isotopes