Determine if each pair of molecules is best described as a pair of enantiomers, a pair of diastereomers, a pair of identical chiral molecules, two of the same meso molecule, constitutional isomers, or unrelated. Select the correct answer from the dropdown menus. The molecules in pair A are [ Select ] . The molecules in pair B are [ Select ] . The molecules in pair C are [ Select ] . The molecules in pair D are [ Select ] . The molecules in pair E are [ Select ] . The molecules in pair F are [ Select ] . The molecules in pair G are [ Select ] . The molecules in pair H are

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

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