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Anachem 101 > Nature of Analytical Chemistry > Flashcards

Nature of Analytical Chemistry Flashcards

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1
Q

Often called the central science

A

Chemistry

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2
Q

A measurement science consisting of a set of powerful ideas

and methods that are useful in all fields of science, engineering, and medicine.

A

Analytical Chemistry

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3
Q

True or False
An analyst must be able to design, carry out, and interpret measurements with the context of the fundamental biological problem with which he or she is presented.

A

False

*fundamental technological problem

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4
Q

Reveals the identity of the constituents (elements and compounds) in a sample.

A

Qualitative analysis

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5
Q

True or False

Quantitative analysis reveals the identity of the constituents (elements and compounds) in a sample.

A

False

It is Qualitative Analysis

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6
Q

Indicates the amount of each substance in a sample

A

Quantitative Analysis

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7
Q

True or False

Qualitative Analysis indicates the amount of each substance in a sample

A

False

It should be Quantitative Analaysis

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8
Q

For a ________ has a known sensitivity limit so that negative and positive results may be seen in the right perspective.

A

qualitative analysis

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9
Q

True or False

quantitative analysis is the relation between measurement and analyte must obey a strict and measurable proportionality

A

True

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10
Q

An indispensable servant of modern technology and has provided an important basis for chemical development.

A

Chemical analysis

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11
Q 
True or False 
The Function of Analytical Chemistry are:
Fundamental Research
Product Development
Product Quality Control
Monitoring and Control of Pollutants
Assay
Medical and Clinical Studies
A

True

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12
Q 
Fill in the blanks:
The Function of Analytical Chemistry are:
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
Product Development
Product Quality Control
Monitoring and Control of \_\_\_\_\_\_\_\_\_\_\_
Assay
Medical and Clinical Studies
A

Fundamental Research

Pollutants

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13
Q 
What is the missing function?
The Function of Analytical Chemistry are:
Fundamental Research
\_\_\_\_\_\_\_\_\_\_\_\_
Product Quality Control
Monitoring and Control of Pollutants
Assay
Medical and Clinical Studies
A

Product Development

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14
Q

first steps in unravelling the details of an unknown

A

Fundamental Research

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15
Q

The design and development of a new product often depend upon establishing a link between its chemical composition and its physical properties or performance

A

Product Development

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16
Q

involve the identification of its constituents by qualitative chemical analysis

A

Fundamental Research

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17
Q

True or False

Typical examples of Product Development are development of alloys and formulation of new drugs

A

False

formulation of new drugs is not included; its under fundamental research

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18
Q

Development of alloys and and polymer composites are what examples under for?

A

Product Development

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19
Q

raw materials and finished products are subjected to extensive chemical analysis

A

Product Quality Control

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20
Q

necessary constituents must be kept at the optimum levels

A

Product Quality Control

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21
Q

Value of the ore is set by its metal content

A

Assay

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22
Q

True or False
Assay
levels of various elements and compounds in body fluids are important indicators of physiological disorders.

A

False

Medical and Clinical Studies

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23
Q 
Function of Analytical Chemistry except:
A. assay
B. fundamental research
C. product quality control
D. screening
A

D. screening

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24
Q

A measurement or observation in which the sample is replaced by a simulated matrix, the conditions otherwise being identical to those under which a sample would be analyzed

A

Blank

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25
Sometimes called the variablity
Precision
26
Constituent of the sample which is to be studied by quantitative measurements or identified qualitatively
Analyte
27
Process of determining the proportionality between analyte concentration and a measured quantity
Calibration
28
Closeness of an experimental measurement or result to the true or accepted value
Accuracy
29
A large proportion of analytical measurements is subject to interference from other constituents of the sample
Separation
30
Constituent of the sample to be studied by quantitative measurements or identified qualitatively
Analyte
31
A highly accurate determination
Assay
32
A procedure which enables the response of an instrument to be related to the mass, volume or concentration of an analyte
Calibration
33
Amount of a substance present in a given mass or volume of another substance
Concentration
34
A component of a sample
Constituent
35
Smallest amount or concentration of an analyte that can be detected by a given procedure and with a given degree of confidence
Detection Limit
36
True or False | Determination is a quantitative measure of an analyte w/an accuracy of considerably better than than 10%
True
37
That amount of a substance which can be indirectly equated w/one mole (6.023x1023 of hydrogen ions
Equivalent
38
A semi-quantitative measure of the amount of an analyte present in a sample; having no accuracy no better than about 10%
Estimation
39
An effect which alters or obscures the behavior of an analyte
Interference
40
A compound or element added to all calibration standards and sample in a constant known amount
Internal Standard
41
Treatment of a sample w/a reagent to prevent interference
Masking
42
Remainder of the sample of which the analyte forms a part
Matrix
43
overall description of the instructions
Method
44
random or indeterminate error associated with a measurement or result
Precision
45
Whose purity and stability are particularly well established
Primary Standard
46
A description of the practical steps
Procedure
47
A chemical used to produce a specified reaction
Reagent
48
A substance or portion of substance
Sample
49
Change in the response from an analyte relative to a small variation
Sensitivity
50
ability of a method to facilitate detection or determination of an analyte
Sensitivity
51
A pure substance which reacts in a quantitative and known stoichiometric manner
Standard
52
The principle upon which a group of methods is based
Technique
53
Response from an analyte is measured before and after adding a known amount of that analyte
Standard Addition
54
Can be distinguished visually or w/the aid of a microscope
heterogenous
55
The process of determining how much of a given sample is the material by its indicated name
Assay
56
volume of standard reagent solution reacting w/analyte
volumetric
57
weight of pure analyte or of a stoichiometric compound containing it
gravimetric
58
intensity of electromagnetic radiation emitted or absorbed by the analyte
spectrometric
59
intensity of nuclear radiations emitted by the analyte
radiochemical
60
electrical properties of analyte solutions
electrochemical
61
abundance of molecular fragments derived from the analyte
mass spectrometric
62
physico-chemical properties of individual analytes after separation
chromatographic
63
physico-chemical properties of the sample as it is heated and cooled
thermal
64
work for only one analyte
specific
65
apply to only a few analytes are
selective

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