Question

Which of the following is an indication that a substance has undergone a chemical change?

No new product has been formed.

The color of the substance has not changed.

The original constitute has not changed.

The molecular structure has changed.

Answer 1

The correct option is : THE MOLECULAR STRUCTURE HAS CHANGED.
A chemical change is a type of change in which a new product is formed as a result of reacting with another substance. When a chemical change occur, the molecular structure of the reactant will be altered and an entirely new product will be formed.
All the other options given are examples of physical change.

Answer 2

Answer:

D.

The molecular structure has changed.

Explanation:

I got it right on Plato.