Final answer:
An act or instance of combining into an integral whole is called synthesis.
The answer is option ⇒a
Step-by-step explanation:
This is seen in combination reactions in chemistry, where two or more substances combine to form a single new substance. The general form of a synthesis or combination reaction is A+B → AB, which describes the process whereby reactants (A and B) combine to form a product (AB) that is a composite of the two.
Another example of a synthesis reaction is when sodium metal reacts with chlorine gas to give sodium chloride, as represented by the equation 2 Na (s) + Cl2 (g) → 2 NaCl (s). The bonding of elements such as calcium and phosphorus to produce mineral crystals in bone is also an example of a synthesis reaction. It is important to note that synthesis is distinct from other types of reactions such as decomposition (‘catabolic reaction’), which involves breaking down a compound into smaller components, and isomerization, which involves the rearrangement of atoms in a molecule without changing its molecular formula.