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Physics Chapter 2 Radiation Concepts Flashcards | StudBud
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Physics Chapter 2 Radiation Concepts
Physics Chapter 2 Radiation Concepts
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1
The orderly arrangement of elements in the periodic table is based upon
atomic weights
atomic number
neutron number
mass number
2
Electrons moving around in specific orbitals demonstrate this energy
kinetic energy
binding energy
3
In a vacuum, electromagnetic radiation
is altered by a strong magnetic field
x-ray energy may be bent by a crystalline lens
causes ionizations of air molecules
has a velocity equal to the speed of light.
4
All of the following are true of electromagnetic energies
EXCEPT
They are arranged in an orderly spectrum according to frequency &wavelength
The relationship between frequency & wavelength is direct & proportional
They are illustrated as sinusoidal waves
They possess both wave and particle characteristics
5
Which of the following is
not a basic characteristic
of the wave equation?
wavelength
energy
velocity
frequency
6
Electromagnetic radiation with a frequency of 2,000 hertz would have a wavelength of
cannot be determined
1/2,000 cm
1.5 x 107 cm
1.5 x 10−7 cm
7
A period in the periodic table is
vertical
determined by the valence electrons
the principal quantum number
represented by a column
8
Its k-shell binding energy is −33.17 keV
lead
tungsten
molybdenum
iodine
9
When comparing iodine (Z = 53) with barium (Z = 56),
iodine has more neutrons
barium has fewer protons
iodine has five (5) orbitals with electrons
barium has a lower k-shell binding energy
10
If the frequency of a wave is 1,000 hertz and is traveling at 50,000 m/sec, then its wavelength is
0.05 m
5 m
50 m
0.5 m
11
entirely concentrated in the nucleus
isotope
atomic number
neutron
atomic mass
12
The unit of mass is the
cc
kg
liter
megabyte.
13
An atom has an a.n. 18 & a m.n. 38. P=#protons & N=#neutrons, which of the following atoms is the isotope of this atom?
P = 18, N = 20
none of the above
P = 20, N = 18
P = 18, N = 21
14
an “L” to “K” transition would yield 31.45 keV of energy
Iodine
tungsten
lead
barium
15
The sum of protons and neutrons in a nucleus is called the
atomic mass unit
quantum number
atomic weight
mass number
16
Carbon has an atomic number of 6. One of its isotopes has a mass number of 14. The number of neutrons in this isotope is
14
19
6
8
17
the transference of energy to an atom
amplitude
velocity
infrared energy
excitation
18
The maximum number of electrons in a period with a principal quantum number of 4 is
6
32
18
8
19
can be long wavelengths in kilometers
infrared energy
radio waves
gamma rays
ultraviolet energy
20
Photon wavelength is
inversely proportional to photon velocity
is not related to frequency.
directly proportional to photon frequency.
inversely proportional to photon frequency
21
Isotopes have ____ mass numbers and ____ atomic numbers.
the same; the same
different; different
the same; different
different; the same
22
Groups of the periodic table
represent elements with the same atomic density
are horizontal
all have the same electron binding energies
represent elements with the same outer electron configuration
23
An electron is ____ charged and has a mass of ____ amu(s).
neutral; 1
negatively; 0.000548
positively; 0.000548
negatively; 1.673 x 10−27
24
The nuclear components that distinguish one element from another are the
neutrons
protons
gamma particles
beta particles
25
elements having the same chemical characteristics
families (groups)
valence
periods
Inherient
26
possesses a negative charge and minute mass
neutron
proton
electron
Isotope
27
An isotope of boron has 5 protons and 6 neutrons. The atomic number of boron is
10
11
6
5
28
Calculate the velocity of red light with a wavelength of approximately 4.0 nm (nm = 10
−9
).
1.2 x 101 nm/sec
1.2 x 10−17 nm/sec
7.5 x 1018 nm/sec
7.5 x 10−1 nm/sec
29
The atomic number is the number of ____ contained in the nucleus
positrons
protons
electrons
neutrons
30
It has a mass number of 207
lead
tungsten
molybdenum
barium
31
In the excitation process, electrons in an atom are moved to a/an ____ energy state
incomplete
higher
ionization
lower
32
an expression of wavelength
lambda
amplitude
radio waves
gamma rays
33
increases as the number of electrons and protons increases
atomic number
kinetic energy
binding energy
isotope
34
If the photon frequency of electromagnetic radiation is increased tenfold, then the
wavelength will decrease to 1/10
velocity will increase times 10
wavelength will increase times 10
velocity will decrease to 10
35
expressed as the height of the wave
amplitude
excitation
velocity
lambda
36
highly penetrating based upon frequency
radio waves
ultraviolet energy
gamma rays
infrared energy
37
A change in the number of these changes the identity of the element
proton
isotope
electron
neutron
38
If an electron is gained or lost from an atom, that atom becomes
an ion
a new element
an isotope
radioactive
39
All of the following are true of the substance glucose (C
6
H
12
O
6
)
EXCEPT
It may be broken down into one atom of glucose
It consists of three elements
It is a compound.
The smallest subdivision of this molecule is glucose
40
Quarks may behave according to the ____ theory
quantum
octet
electromagnetic
string
41
The maximum number of electrons found in any energy level (shell) at any point in time is calculated by the formula
N = amu x Z
N = Z x e2
2n2
W = F x D
42
All of the following are energy forms
EXCEPT
nuclear
sound
thermal
electrical
43
Elements having the same principal quantum number are in this order
atomic number
valence
families (groups)
periods
44
A gain or loss of this atomic particle creates an isotope
Isotope
electron
neutron
proton
45
An element with an atomic number of 22 has how many electrons in the second principal quantum number level (L shell)?
2
8
10
22
46
It is determined by the number of electrons in the outermost shell of an atom
families (groups)
barium
valence
periods
47
According to the “rule of octets,”
the valence shell is chemically inert
both a and c.
eight energy levels have electrons
eight protons occupy the outermost shell
48
the product of frequency and wavelength
lambda
velocity
excitation
amplitude