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Basic principles of qualitative analysis

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Assumed we get any sample to find out its compounds or chemical elements. Our first step shouldn't be to switch on the "state of the art" analysis equipment. We should start to solve the basic questions. These information will help us later to specify the final methods.
Main attention is payed to the following points:
* source of the sample
* Is it a liquid or solid under standard conditions
* Solubility in different solvents

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https://brainmass.com/chemistry/experimental-design-and-methods-in-chemistry/basic-principles-of-qualitative-analysis-36123

Solution Preview

Based on my own experience I recommend the following basic questions and steps:

*** Warning: Always assume the substance is harmful ! - wear protection glasses, don't touch it with your unprotected hands and don't test the flavor ***

1.) What is the source of the samlpe ?
* Is it a natural substance (mineral, water) or an industrial product (cement, acid).
* natural compounds may consist of many different ...

Solution Summary

Use of the general colligative properties of a sample like solubility, phase, color, melting- and boiling point. The idea behind this article is that simple tests may help us to avoid costs and finding the right answer without uneccessary effort. This article is mostly focused on inorganic compunds with which a student is confronted at the begin of his studies.

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â?¢ Qualitative Research Methods
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â?¢ Summary: Quantitative Research Methods Selected Designs
â?¢ Summary: Qualitative Research Methods Selected Designs

Research Design Matrix attached
Research Design Matrix
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Complete the matrix to summarize qualitative and quantitative research designs. For each design, identify key characteristics, specific terminology, strengths and weaknesses, and an example peer-reviewed research study.

When is the qualitative method appropriate?
Common qualitative designs Key characteristics Specific terminology Strengths and weaknesses Example study
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When is the quantitative method appropriate?
Common quantitative designs Key characteristics Specific terminology Strengths and weaknesses Example study
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â?¢ Resource: Research Design Matrix

â?¢ Complete the matrix located on the student Web site:

o Demonstrate your understanding of qualitative and quantitative research methods and designs.
o Identify key characteristics, specific terminology, strengths and weaknesses.
o Include an example peer-reviewed research study

Solving Basic and Applied Problems:

â?¢ Write a 700- to 1,000-word paper discussing how these designs are used for solving basic and applied problems in I/O psychology. Use examples to support arguments.

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