chap 1 Flashcards
(31 cards)
used to identify and quantify chemical composition
chemical analysis
identify substance like nature of certain chemicals
qualitative analysis
give me examples of qualitative analysis
appearance, color and odor
it determine the quantity or concentration, IT HAS TO BE MEASURED
quantitative analysis
give me examples of quantitative analysis
density, volume and specific gravity
what are the 2 aspects of qualitative analysis
theoretical and experimental aspects
it is the study of electrolytes
theoretical aspects
it identify and determining amount of constituents present in a substance
experimental aspect
what are the 2 preparation of analysis
sampling step and separation
it refers to the amount and uniformity of material
sampling step
either desired constituent, undesired, and interfering constituents
separation
what is chromatography?
separation methods
what are the 3 types of chromatography?
-gel permeation
- gas
- liquid
it separates volatile constituents
gas chromatography
separates small, neutral molecules
liquid chromatography
large molecules separate according to size
gel permeation chromatography
it produce a purified desired constituent for analytical measurement
separation
develop and provide such standard samples
national institute of standards and technology
what are the presentation of results?
-weight percent
- molar concentration
- PPM (parts per million by weight)
it is the accuracy of analytical result reflects by how well it agrees with true quantity of constituent
presentation of results
it refers to often uncovers such systematic errors
standardization
measures the mass of precipitates of the constituent
gravimetric analysis
measures the volumes of solution that react with constituents
titrimetric analysis
referred to as “wet methods”
titrimetric analysis
