A concept map is shown. Which of the following topics best completes the graphic organizer?

A. Physical properties of elements

B. Chemical properties of elements

C. Evidence of a physical change

D. Evidence of a chemical change

C Evidence of Physical change

Explanation:

Because Solid forms is a physical change and so are all the other ones    

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.