Chapter 6

Question 1

Electromagnetic radiation

Answer 1

is defined as an oscillating electric and magnetic field consisting of broad regions called radio waves, microwaves, infrared waves (IR), ultraviolet (UV) rays, x-rays, and gamma (Y) rays.

Question 2

E=hf

Answer 2

E=energy (Joules or J)
h=planck’s constants (6.6*10-34 J/s)
f=frequency (Hz or s-1)

Question 3

E=hc/ t (wavelength)

Answer 3

E=energy (Joules or J)
h=planck’s constants (6.610-34 J/s)
c=speed of light (3.010^8 m/s)
t= wavelength (10^9 nm=1m)

Question 4

c= f * t (wavelength)

Answer 4

c=speed of light (3.0*10^8 m/s)
t= wavelength (10^9 nm=1m)
f=frequency (Hz or s-1)

Question 5

E

Answer 5

energy (Joules or J)

Question 6

H

Answer 6

planck’s constants (6.6*10-34 J/s)

Question 7

F

Answer 7

frequency (Hz or s-1)

Question 8

Wavelength

Answer 8

units are in meters (m) and nanometers (10^9 nm=1m)

Question 9

C

Answer 9

speed of light (3.0*10^8 m/s)

Question 10

Proportions:

Answer 10

E is directly proportional to F (inc E, Inc F)

E & F are indirectly proportional to wavelength (inc in E & F, dec wavelength)

Question 11

Constructive interference

Answer 11

produces a combined wave having a LARGER amplitude

Light bands are the result of interfering waves perfectly overlapping each other

Question 12

Destructive interference

Answer 12

produce a combined wave of smaller to zero amplitude

Dark bands result from interfering waves being out of sync with each other

Question 13

Converting between frequency and wavelength

Answer 13

nm 10^-9

pm 10^-12

Question 14

Order waves and rays

Answer 14

gamma rays 
x rays 
uv
visible spectrum 
ir 
microwave 
radio waves

Question 15

Visible Spectrum

Answer 15

400-700

Violet 
Blue 
Green 
Yellow 
Orange 
Red

Question 16

Absorption

Answer 16

Absorption: an electron can jump from a lower-energy (n=1) to a higher-energy (n=3) orbit by absorbing a photon of light of the same frequency as the energy difference between the orbits

Question 17

Emission

Answer 17

When an electron falls from a higher energy (n=3) to a lower-energy (n=1) orbit, it emits a photon of light of the same frequency as the energy difference between the orbits

Question 18

Rydberg Equation: WAVELENGTH

Answer 18

R= 1.097 X 10^7 m-1, nf
R is the constant
Nf and ni are positive whole numbers
As the difference between nf and ni increases, the difference in energy between ni and nf decreases (E and wavelength are inversely proportional), thus wavelength will increase