CHEM: SPECTROCHEMICAL

Question 1

is any analytical method that uses light for measurement of chemical concentrations.

Answer 1

Spectrophotometry

Question 2

Spectrophotometry is also called?

Answer 2

spectroscopy

Question 3

Measurements based on light and other forms of electromagnetic radiation.

Answer 3

SPECTROCHEMICAL METHODS

Question 4

was originally the study of the interaction between radiation and matter as a function of wavelength (λ)

Answer 4

SPECTROSCOPY

Question 5

referred to the use of visible light dispersed according to its wavelength,
e.g. by a prism

Answer 5

spectroscopy

Question 6

T or F
Light can be thought of as a wave or particle.

Answer 6

True

Question 7

is the distance between crests of a wave (m)

Answer 7

wavelength

Question 8

is the number of oscillations per second (Hz)

Answer 8

frequency

Question 9

empirical relationship that relates the
absorption of light to the properties of the material through which the light is travelling.

Answer 9

BEER-LAMBERT LAW

Question 10

also known as Beer’s law or the Lambert–Beer law or the Beer–Lambert–Bouguer law

Answer 10

BEER-LAMBERT LAW

Question 11

a plastic ware wherein we will put a
sample and light will pass through it.

Answer 11

Cuvette

Question 12

the fraction of incident light at a
specified wavelength that passes through a sample.

Answer 12

Transmittance

Question 13

a unitless measure of the transmittance of an optical element for a given length at a given wavelength

Answer 13

Optical density

Question 14

involves interactions of matter with
electromagnetic radiation, such as light.

Answer 14

ELECTROMAGNETIC SPECTROSCOPY

Question 15

T or F

Electromagnetic spectroscopy can be classified into:
- Emission spectroscopy
- Absorption spectroscopy
- Scattering spectroscopy

Answer 15

True

Question 16

the quantifiable study of electromagnetic spectra.

Answer 16

SPECTROPHOTOMETRY

Question 17

a photometer (a device for
measuring light intensity) that can measure
intensity as a function of the color, or more
specifically, the wavelength

Answer 17

spectrophotometer

Question 18

study of electromagnetic radiation spectra
given off by atoms or molecules that undergo a
transition to a lower energy level.

Answer 18

EMISSION SPECTROSCOPY

Question 19

study of electromagnetic radiation spectra
absorbed by atoms or molecules that change
energy levels; the atoms usually positioned
between a radiation source and the observer.

Answer 19

ABSORPTION SPECTROSCOPY

Question 20

absorption of infrared
radiation

Answer 20

Vibrational spectroscopy

Question 21

is a technique for determining the concentration of a particular metal element in a
sample

Answer 21

Atomic absorption

Question 22

absorption of ultraviolet
and visible light

Answer 22

UV/visible spectroscopy

Question 23

Measures the absorption of gamma rays by atoms bound in a solid as a function of gamma-ray energy.

Answer 23

Mossbauer spectroscopy

Question 24

the subset of spectroscopy that
deals with the infrared region of the
electromagnetic spectrum

Answer 24

INFRARED SPECTROSCOPY

Question 25

involves the interaction of charged species with
magnetic and/or electric fields, giving rise to a mass spectrum

Answer 25

MASS SPECTROMETRY

Question 26

measures the amount of light that a substance
scatters at certain wavelengths, incident angles, and polarization angles.

Answer 26

SCATTERING SPECTROSCOPY

Question 27

spectroscopic technique used in condensed
matter physics and chemistry to study vibrational, rotational, and other low-frequency modes in a system.

Answer 27

RAMAN SPECTROSCOPY

Question 28

involves interactions with electron beams.

Answer 28

ELECTRON SPECTROSCOPY