Chapter 1

Question 1

Definition of Spectroscopy

Answer 1

The study of the interaction between Electromagnetic Radiation and Matter.

Question 2

7 types of Electromagnetic Waves

Answer 2

Radio wave
Microwave
Infrared
Visible light
Ultraviolet
X-rays
Gamma rays

Question 3

instrument that determines the absorption spectrum

Answer 3

Spectrometer

Question 4

Why does energy radiated in the form of wave?

Answer 4

The charged particles causes an electromagnetic field to interact with magnetic field which creates wave-like energy.

Question 5

definition of wavelength

Answer 5

The distance between two points in a wave.

Question 6

definition of Amplitude

Answer 6

The maximum length of the electric vector in the wave.

Question 7

Velocity of light (c) = ___ ms-1

Answer 7

3.00 x 10^8 Meter per second

Question 8

Formula of wavenumber

Answer 8

1/lambda = v/c

Question 9

definition of Photons

Answer 9

Wave packets of energy.

Question 10

equation of Energy of Photon

Answer 10

E = hv = hc/lambda

Question 11

Planck’s constant, h = ___ J.s

Answer 11

6.63 x 10 ^ -34 Joules

Question 12

If wavelength (lambda) increase,
energy
frequency
wavenumber

Answer 12

decrease.

Question 13

wavelength range of UV

Answer 13

200 - 380 nm

Question 14

wavelength range of visible light

Answer 14

380 - 780 nm

Question 15

wavelength range of Near-Infrared

Answer 15

0.78 - 2.5 um

Question 16

wavelength range of Mid-Infrared

Answer 16

2.5 - 15 um

Question 17

definition of electromagnetic radiation

Answer 17

The emission and transmission of electromagnetic waves energy.