Question

1. choose the best answer.

what is the purpose of developing the following model?
to identify the structure of different chemicals
to identify the properties of chemicals
to communicate a newly discovered chemical
to learn more about the process of forming a precipitate

Explanation:

The model shows the formation of a precipitate from a solution (the first test - tube is a solution, then a substance is added to form a suspension with a precipitate at the bottom, and finally, the supernate (the liquid above the precipitate) and the precipitate are shown). This clearly demonstrates the process of precipitate formation. It is not about identifying chemical structures (no structural formulas or diagrams of atoms/molecules are shown), not about general chemical properties (no indication of reactivity, melting point etc. testing), and not about communicating a newly - discovered chemical (no unique chemical symbol or name for a new chemical is presented).

Answer:

to learn more about the process of forming a precipitate