Question

John Dalton believed which of the following about atoms?

Atoms are real even though they're invisible.
All atoms of a single substance are identical.
The atom could be divided into smaller parts.
Atoms of different substances differ by weight.

Answer 1

Answer: IT IS THE FIRST AND SECOND AND LAST.

atoms are real even though they’re invisible

All atoms of a single substance are identical.

Atoms of different substances differ by weight

Answer 2

Atoms are real even though they're invisible.