Question

Which of the following statements is not part of Dalton's atomic theory?
All elements are made of atoms.
All atoms of an element are the same.
Different elements are composed of different atoms.
Different atoms come together to form an element.

Answer 1

I think the first statements, namely "all elements are made of atoms"
In dalton's theory there is the subsequent statement:
"all matter is made by atoms"

Answer 2

also the last statement is not properly belonging to Dalton's theory. The subsequent statement belongs to Dalton's theory:
"atoms from different elements come together in order to combine each other to form compounds according to small integer numbers"

Answer 3

@Mlink1290 thanks!