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ANACHEM > MODULE 15 > Flashcards

MODULE 15 Flashcards

1
Q

4 basic discipline in anachem

A

CHROMATOGRAPHY
ELECTROANALYTICAL TECHNIQUE
LUMINESCENCE
SPECTROMETRY

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2
Q

interaction of radiation and matter

A

SPECTROSCOPY

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3
Q

largest and most important single group of technique

A

SPECTROMETRIC TECHNIQUES

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4
Q

energy moving from one place to another

A

RADIATION

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5
Q

formation of light after chemical reaction

A

EMISSION

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6
Q

forms energy that is transmitted through space at enormous velocity

A

ELECTROMAGNETIC RADIATION

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7
Q

light also travels nearly a ______ times faster than sounds

A

MILLIONS

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8
Q

discrete packet of energy or particles

A

PHOTONS OR QUANTA

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9
Q

energy of photon is ___________ to it’s frequency

A

DIRECTLY PROPORTIONAL

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10
Q

highest surface of wave

A

CREST

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11
Q

lowest surface of wave

A

TROUGH

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12
Q

number of complete cycles or oscillation per seconds

A

FREQUENCY

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13
Q

linear distance between two equivalent points in successive cycles

A

WAVELENGTH

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14
Q

maximum value reached by the vectors in a cycle

A

AMPLITUDE

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15
Q

_______ is a useful aid if comparisons between techniques are difficult

A

EQUATION

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16
Q

vector quantity that provides a measure of the electric or magnetic field strength at a maximum in the wave.

A

AMPLITUDE

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17
Q

Time in seconds for successive maxima or minima to pass a point in space

A

PERIOD

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18
Q

Number of oscillations that occur in one second.

A

FREQUENCY

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19
Q

Number of vibrations of wave motion per second.

A

FREQUENCY

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20
Q

unit of frequency

A

HERTZ

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21
Q

Wave front through a medium depends on both the medium and the frequency

A

VELOCITY

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22
Q

Measure the extent of interaction between electromagnetic radiation and the medium though which it passes.

A

REFRACTIVE INDEX

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23
Q

Another way to describe electromagnetic radiation

A

WAVENUMBER

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24
Q

Most often used to describe radiation in the infrared region.

A

WAVENUMBER

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25
Q

Particle having zero mass and an energy of hv.

A

PHOTON

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26
Q

Spectrum extends about 400nm to almost 800nm.

A

VISIBLE REGION

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27
Q

Spectroscopic methods based on ultraviolet, visible, and infrared radiation.

A

OPTICAL METHODS

28
Q

Multicolored light

A

POLYCHROMATIC LIGHT

29
Q

Transmitted via electromagnetic waves that are characterized
by their frequency and
wavelength

A

ENERGY

30
Q

The energy associated with electromagnetic radiations covers a wide range of magnitude as
do the corresponding frequencies and
wavelengths.

A

ELECTROMAGNETIC SPECTRUM

31
Q

entire distribution of electromagnetic radiation according to frequency and wavelength

A

ELECTROMAGNETIC SPECTRUM

32
Q

naked to the eye and it is the color of rainbow

A

VISIBLE LIGHT

33
Q

<400 NM

A

UV REGION

34
Q

> 700

A

INFRARED

35
Q

wavelength increases on the _____

A

RIGHT SIDE

36
Q

energy increases on the _________

A

LEFT SIDE

37
Q

___________ increases as it directly proportional to
energy

A

FREQUENCY

38
Q

used for wavelength calibration

A

DIDYMIUM

39
Q

stimulus is heat or electrical energy

A

EMISSION SPECTROSCOPY

40
Q

excitation of the analyte by chemical reaction

A

CHEMILUMINESCENE

41
Q

Chemiluminescence involving a biological or enzyme
reaction is termed as

A

BIOLUMINESCENCE

42
Q

______________ is used is called NON
RADIATIVE processes.

A

NO RADIANT ENERGY

43
Q

Sample is excited, applying thermal, electrical, or chemical energy.

A

EMISSION AND CHEMILUMINESCENCE PROCESS

44
Q

3 BEHAVIORS OF LIGHT

A

REFFLECTED
ABSORBED
TRANSMITTED

45
Q

dark vertical lines

A

FRAUNHOFER LINES

46
Q

decrease the energy per unit area of a beam

A

ATTENUATE

47
Q

BEER LAMBERT LAW states that the concentration of the unknown substance is _______________ to the absorbed light, but it is ____________________________ to the amount of transmitted light

A

DIRECTLY PROPORTIONAL, INVERSIBLY PROPORTIONAL

48
Q

single color : single wavelength or frequency

A

MONOCHROMATIC LIGHT

49
Q

Plot of absorbance versus wavelength,
wavenumber, or frequency.

A

ABSORPTION SPECTRA

50
Q

measure the amount of light absorbed as a function of wavelength.

A

ABSORPTION SPECTROSCOPY

51
Q

emissions of photons is measured.

A

PHOTOLUMININESCENCE SPECTROSCOPY

52
Q

generate sufficient radiant energy or power to measure analyte of interest

A

LIGHT SOURCE

53
Q

minimizes unwanted stary light

A

ENTRANCE SLIT

54
Q

control the width of light beam

A

EXIT SLIT

55
Q

also called as absorption cell, analytical cell, sample cell

A

CUVETTE

56
Q

isolates specific wavelength of light

A

MONOCHROMATOR

57
Q

TYPES OF CUVETTE

A

ALIMIMUM SILICA GLASS
QUARTZ
BOROSILLICATE GLASS
SALT GLASS

58
Q

most commonly used

A

ALUMINUM SILICA GLASS

59
Q

used for measurement of solution requiring UV or visible region

A

QUARTZ

60
Q

KINDS OF DETECTOR

A

PHOTOCELL
PHOTOTUBE
PHOTOMULTIPLIER
PHOTODIODE

61
Q

simplest detector and least expensive

A

PHOTOCELL

62
Q

like photocell and it has a photosensitive material that gives off electrons when light energy strikes

A

PHOTOTUBE

63
Q

most commonly used and it is 200x more sensitive than phototube

A

PHOTOMULTIPLIER

64
Q

not as sensitive but with excellent linearity

A

PHOTODIODE

65
Q

simplest type of absorption spectrometer

A

SINGLE BEAM SPRECTROPHOTOMETER

ANACHEM (18 decks)

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