Question

question 20
which part of daltons atomic theory is incorrect?
a atoms are not changed in a chemical reaction
b each element is made up of tiny particles called atoms
c chemical compounds are formed when atoms combine with each other
d the atoms of a given element are identical

Explanation:

Dalton's Atomic Theory states that atoms are indivisible and indestructible, and they are not changed in a chemical reaction.

Answer:

A. Atoms are not changed in a chemical reaction