Which of the following is not true of chemical changes?

a chemical change rarely occurs at the molecular level.
flammability and decomposition are examples of chemical changes.
chemical changes involve a rearrangement of atoms to form new substances.
chemical changes can often be identified by clues such as formation of a gas or a solid and a release of heat.

Option (a) is the correct answer.

Explanation:

At molecular level there will be need of energy always for breaking or making of chemical bonds. Therefore, a chemical change will always occur at molecular level.

Thus, we can conclude that out of the given options, the statement a chemical change rarely occurs at the molecular level is not true of chemical changes.  

one state would change   like louisiana to texas. thats a change

explanation:

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.