Question

what is the primary objective of the \synthesis and analysis of alum investigations\ lab?
select one:

to synthesize a large sample of alum.

to repeat the week 1 experiment to get a better percent yield.

to memorize the physical properties of all the substances in table al.1.

to design an experiment that uses physical properties to identify an unknown substance.

Explanation:

In a typical "Synthesis and Analysis of Alum Investigations" lab, the main goal is not just to synthesize a large sample (as that might be a part - but not the overarching objective). Repeating an experiment for better yield is a more narrow - process - related task. Memorizing physical properties is not the primary aim. Designing an experiment to use physical properties (like solubility, melting point etc. which are often studied in alum - related labs) to identify an unknown (which could be alum or related substances) is a comprehensive and primary objective that encompasses synthesis and analysis aspects.

Answer:

To design an experiment that uses physical properties to identify an unknown substance.