Question

one of the following does not happen during a chemical reaction:
a): Breaking of old chemical bonds and formation of new substance.
b): Formation of new substances with entirely different properties.
c): Atoms of one element change into those of another element to form new products.
d): A rearrangement of atoms takes place to form new products.

Answer 1

I suppose its D option ..not sure enough..but still recommend this one

Answer 2

Correct answer is option C.
Atoms of an element can never change into atoms of another element.
I am 100% sure.
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