Which one of the following does not happen during a chemical reaction?

Breaking of old chemical bonds and formation of new chemical bonds

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Formation of new substance with entirely different properties

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An atom of one element change into those of another element to form new products

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A rearrangement of atoms takes place to form new products

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Solution

The correct option is D An atom of one element change into those of another element to form new products
According to Dalton's theory, atoms of same element are alike in all respect and atoms of different elements are different.
In a chemical reaction one substance is converted into another by rearrangement of atoms not by changing element of one type into other.

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Similar questions

One of the following does not happen during a chemical reaction. This is :

(a) Breaking of old chemical bonds and formation of new chemical bonds

(b) Formation of new substances with entirely different properties

(d) A rearrangement of atoms takes place to form new products.

Assertion:- The products formed in a chemical reaction has entirely different properties to that of reactants.

Reason:- Bonds between the atoms of reactants break and form new bonds to make products.

Which of the following cause a substance to change into an entirely new substance with a new chemical formula?

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