"Chemergy : Chemestry nad Science Club in Synergy", this means the power of cooperation of chemistry and science in working together to produce a result not obtainable by chemistry alone or by science alone. They need each other in order to produce a certain kind of result. [ Thus without the other one, the desired result cannot be achieved. ].
Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate the chemical reactions. Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Synergy may be defined as two or more functioning together to produce a result not independently obtainable.
If chemistry and science will join together they can produce an obtainable result called synergy. By chemistry alone or by science alone they can't produce an obtainable result when they don't help each other.