Chemical AnalysisUNIT 1

SCH 4C

Chemical Analysis

Analytical chemistry deals with identifying the chemical composition or make-up of substances.

Chemical analysis can be qualitative or quantitative.

Qualitative analysis

Qualitative analysis is the testing of a substance or mixture to determine what materials are present.

Quantitative analysis

Quantitative analysis is the testing of a substance or mixture to determine how much of a material is present.

Chemical Analysis

Chemical analysis provides important information for science and industry.

Chemical analysis is used: To test samples of air, soil and water to identify

pollutants To help in the diagnosis of disease In quality control tests of food, drug and other

industries

Different methods of qualitative analysis are suited to each of these different applications. The techniques are designed to test a sample of a substance for the properties of a particular element or compound.

Techniques of Qualitative Analysis

Some techniques include: chromatography emission and absorption spectroscopy solubility of ions characteristic properties and reactions

of substances

Connections to Your World

Qualitative analysis tests used everyday include:Pregnancy testsBreathalyser testsDrug testspH testing kits for a poolBlood glucose test for diabetics

1.1 Activity

Turn to page 8-9Read through the lab activity and create

an observation table in your lab book.