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.  

yes, water is wet, just as it makes other things wet, it is wet itself, kinda like ice, when ice is in water, the ice makes water cold, and ice is cold, therefore with that example, water is wet

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying