Lesson 2 Flashcards
General steps for chemical analysis that answers the question “what information is needed”
Identify the problem
Step that answers the question “what material is required for analysis
Select the sample
Step that answers “how the sample prepared”
Prepare the sample
Step that answers “how desired the data obtained”
Conduct the analysis
What are the general steps for chemical analysis
- Identify the problem
- Select the sample
- Prepare the sample
- Conduct the analysis
- Analyze the data
Determines the presence or absence of a particular compound, but not the mass or concentration
Qualitative analysis
Test to detect starch
Iodine test
Qualitative chemical or metallurgical assay which uses acid
Acid test
Test that detect carbohydrates
Molisch test
Test for detecting the presence of amino acids
Ninhydrin test
Test for detecting the presence of peptide bonds
Biuret test
Test to detect iodine
Starch test
A presumptive blood test in which the chemical indicator phenolphthalein is used to detect the possible presence of hemoglobin
Kastle meyer test
Measurement of the quantities of particular chemical constituents present in a substance
Quantitative analysis
A chemical substance is measured by determining the volume or amount of a well defined reagent that is needed to react with this analyte
eg. Acid base titrate
Volumetric analysis/ titration