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Circle the letter of each sentence that is part of John Dalton’s atomic theory.
a. All elements are composed of atoms.
b. No two atoms of the same element are exactly alike.
c. An atom of one element cannot be changed into an atom of a different element.
d. Atoms cannot be created or destroyed in any chemical changes.

Circle the letter of each sentence that is part of John Daltons atomic theory a All elements are composed of atoms b No two atoms of the same element are exactl class=

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Answer:

A) All the elements are composed of atoms.

d) Atoms cannot be created or destroyed in any chemical changes.

c) An atom of one element cannot be changed into an atom of a different element.

Explanation:

The main postulates of Dalton atomic theory was:

1) The matter is composed of atoms and atom is indivisible particle which can not be destroyed.

2) The atoms of an element are identical.

3) The atoms of different elements are combining with definite proportion and form compounds.

4) The atoms of different elements are different from each other.

5) During chemical reaction rearrangement of atoms occur and form new compounds.

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