Analyse (Identify components and the relationship between them; draw out and relate implications) the DIFFERENCES between an Open and Closed System.
Things to THINK about:
Definitions of Open and Closed
What are the similarities and differences?
What are the implications for a reaction if it's in an Open System compared to a Closed System?
Written Response:
A closed system is one where energy can freely enter and exit yet matter cannot. Whereas in an open system both matter and energy can enter and exit without obstruction. The implication of energy being able to enter and exit both an open and closed system means that evidence of an exo and endothermic reaction by the measurement of temperature can be made. Reaction rates in both systems can be increased or decreased through manual temperature changes from heating or ice baths.
Conservation of mass will be affected whether a system is closed or open. In reactions in which a gas is produced as a product, an open system will allow the diffusion of this product, minimising the mass of the products. A benefit of open systems is that products can be removed, and more reactants added in order to continually drive a reaction forward when product yield is important. In closed systems as matter cannot enter conservation of mass is preserved. Such a system will be of detriment to reaction such as combustion, that require excess reactant in order to proceed to completion.