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ALALYTICAL CHEMISTRY > Lesson 1 > Flashcards

Lesson 1 Flashcards

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1
Q

all of the components in the sample containing an analyte.

A

matrix
sample matrix

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2
Q

portions of a material of approximately the same size that are carried through an analytical procedure at the same time and in the same way.

improves the quality of the results and provides a measure of their reliability.

A

Replicates
Replicate Samples

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3
Q

various statistical tests are performed on the results to establish their reliability.

A

Quantitative Measurement

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4
Q

Preparing Solutions for?

A

Physical and Chemical Changes

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5
Q

causes an error in an analysis by enhancing or attenuating (making smaller) the quantity being measured.

A

Interference

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6
Q

Liquid samples are subject to

A

solvent evaporation

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7
Q

to prevent contamination by atmospheric gases.

A

sealed container

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8
Q

One of the first questions to be considered in the selection process is

A

level of accuracy required

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9
Q

involves obtaining a small mass of a material

A

Sampling

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10
Q

most difficult step in an analysis and the source of greatest error

A

Sampling

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11
Q

constituent parts can be distinguished visually or with the aid of a microscope.

A

heterogeneous

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12
Q

the process of determining how much of a given sample is the material indicated by its name

A

assay

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13
Q

We ________ samples and we _______ __________ .

A

analyze, determined substances

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14
Q

One is the ____ or the _________________ to be analyzed.

A

mass, volume of sample

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15
Q

second is the measurement of some quantity that is proportional to the amount of analyte in the sample, such as

A

mass, volume, intensity of light, or electrical charge.

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16
Q

determine the mass of the analyte or some compound chemically related to it.

A

Gravimetric method

17
Q

involve the measurement of such electrical properties as voltage, current, resistance, and quantity of electrical charge.

A

Electroanalytical method

18
Q

determines the volume of a solution containing sufficient reagent to react completely with the analyte.

A

Volumetric Method

19
Q

based on measurement of the interaction between electromagnetic radiation and analyte atoms or molecules or on the production of such radiation by analytes.

A

Spectroscopic methods

20
Q

Miscellaneous methods:

A

mass-to-charge ratio
rate of radioactive decay
heat of reaction
rate of reaction
sample thermal conductivity

optical activity

  • refractive index.
21
Q

dominated by sophisticated instrumentation

A

MODERN INSTRUMENTATION

22
Q

tend to form the backbone of most undergraduate

A

Analytical Chemistry

23
Q

The presence of copper

A

Bluish-Green

24
Q

Presence of Sodium

A

Yellow Color Flame

25
Q

study of the separation, identification, and quantification of the chemical components of natural and artificial materials.

A

Analytical Chemistry

26
Q

gives an indication of the identity of the chemical species in the sample, and quantitative analysis determines the amount of certain components in the substance.

A

Qualitative Analysis

27
Q

achieved by measurement of weight or volume.. Instrumental methods use an apparatus to measure physical quantities of the analyte such as light absorption, fluorescence, or conductivity

A

Classical quantitative analysis

28
Q

an apparatus to measure physical quantities

A

Instrumental methods

29
Q

to measure physical quantities of the analyte such as

A

light absorption, fluorescence, or conductivity.

30
Q

reveals the identity of the elements and compounds in a sample

A

Qualitative analysis

31
Q

indicates the amount of each substance in a sample.

A

Quantitative analysis

32
Q

acid test for

A

Gold

33
Q

test for the presence of blood

Blood test Kastle-Meyer test - A drop of

A

Kastle-Meyer test

ALALYTICAL CHEMISTRY (3 decks)

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