[1] Intro to AnaChem

Question 1

component/s of a sample to be determined

Answer 1

analyte

Question 2

deals w/ the qualittative and quantitative characterization of composition of matter; not a separate branch of chemistry, but rather its application

Answer 2

analytical chemistry

Question 3

Given a sample, what questions do AnaChem answer?

Answer 3

what is contained and how much of it is contained

Question 4

two types of analysis

Answer 4

qualitative and quantitative analysis

Question 5

answers what constituents are present in a sample; more rapid and less expensive

Answer 5

qualitative analysis

Question 6

What terms are critical to distinguish in qualitative analysis?

Answer 6

selective and specific

Question 7

may occur with other substances but a degree of preference may be present for the substance of interest

Answer 7

selective test (qualitative analysis)

Question 8

only occurs with the substance of interest

Answer 8

specific test (qualitative analysis)

Question 9

answers how much of the constituents are present; may be performed by chemical reactions and use of instruments

Answer 9

quantitative analysis

Question 10

amounts obtained in quantitative analysis

Answer 10

absolute amount and relative amount

Question 11

based on the evaluation of the concentration with the use of physical constants and/or universal quantities only

Answer 11

absolute method

e.g., gravimetry

Question 12

involves indirect calibration; relationship between the analytical concentration and analytical response is established

Answer 12

relative method (quantitative analysis)

e.g., spectroscopy

Question 13

parameters to describe analytical methods

Answer 13

technique, method, procedure, protocol

Question 14

scientific principle useful in providing information about composition

Answer 14

technique

Question 15

adaptation of the technique selective for the sample; a means to analyze a sample of a certain analyte in a specific matrix

Answer 15

method

Question 16

outlines directions for the use of the method

Answer 16

procedure

Question 17

set of stringent written directions that must be followed for a given purpose and requirement

Answer 17

protocol

Question 18

three types of analysis

Answer 18

complete analysis, ultimate analysis, partial analysis

Question 19

amount of all constituents in a sample are quantitatively determined

Answer 19

complete analysis

Question 20

amount of each component of a sample is determined

Answer 20

ultimate analysis

Question 21

determines the amount of certain constituents in a sample

Answer 21

partial analysis

Question 22

two methods of analysis

Answer 22

classical method and modern analytical or instrumental method

Question 23

earliest method of analysis

Answer 23

classical method

Question 24

based on the changes in mass or volume to determine amount of analyte

Answer 24

classical methods

Question 25

term for classical methods involving liquid phases in analysis

Answer 25

wet chemical methods

Question 26

two classical methods

Answer 26

gravimetry and volumetry

Question 27

isolation and/or conversion of a sought-for substance into a form that can be weighed

Answer 27

gravimetry

Question 28

also called titimetric analysis; measurement of the volume of a solution containing sufficient reagent (titrant) to react w/ the analyte

Answer 28

volumetry

Question 29

also referred to as instrumental methods

Answer 29

modern analytical methods

Question 30

types of modern analytical methods

Answer 30

electrochemical methods, spectroscopic methods, thermoanalytical methods, chromatographic methods, coupled methods

Question 31

type of instrumental method which utilizes electrical properties

Answer 31

electrochemical method

voltametry, conductometry, potentiometry, amperometry, coulometry

Question 32

type of instrumental method which takes advantage of the interaction of the electromagnetic radiation with the analyte to measure its amount

Answer 32

spectroscopic method

UV-Vis, NMR, IR, Mass spectrometry

Question 33

tyoe of instrumental method which involves manipulation of temperature to produce the measured parameter

Answer 33

thermoanalytical method

calorimetry, thermogravimetry, differential thermal analysis

Question 34

type of instrumental method involving separation of sample components based on affinity to a mobile and stationary phase

Answer 34

chromatographic method

HPLC, IC, GC

Question 35

type of instrumental method combining one or more methods to enhance analytical performance

Answer 35

coupled method

most popular: chromatography combined w/ spectroscopy