A substance undergoes a change. The statement indicates that the change was a chemical change in new molecules formed. The correct option is D.
What is a chemical change?
A chemical change is an alteration of one or more compounds into one or more new and distinct substances and is referred to as a chemical change or chemical reaction. In other words, a chemical change is an atomic rearrangement-based chemical process.
The chemical change is the change in the chemical of the object. It transforms into a totally new substance. It loses its original property. The substance froze, or shape changes or size changes is a physical change. Only when the new molecule is formed will the chemical change.
Thus, the correct option is D. New molecules formed.
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The question is incomplete. Your most probably complete question is given below:
The substance froze
The substance changed size
The substance changed shape
New molecules formed
