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Abeka Chemistry test 5 Flashcards | StudBud
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Abeka Chemistry test 5
Abeka Chemistry test 5
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1
Elements in columns 1, 2 , and 13-18 of the periodic table are all classified as __________ elements.
main-group
Transition
Alkali
Inner transition
2
Which of the following categories includes nitrogen, oxygen, chlorine, and krypton?
halogens
nonmetals
noble gases
semimetals
3
What does light consist of?
Electromagnetic
Photons
Both A and B
Neither A and B
4
To three significant figures, the speed of light in a vacuum is 1.82 x 10⁵ m/s.
False
True
5
What is the probable formula of the fluoride of nitrogen?
NF2
NF3
NF
NF4
6
What does the magnetic quantum number describe?
orbital orientation
electron shell
orbital shape
electron spin
7
What unit is wave frequency usually measured in?
Newtons
Pascal
Hertz
Meters
8
Refer to the periodic table:The elements in column 2 are the __________ metals.
Noble gases
Alkali
Halogens
Alkaline earth
9
Which of the following is
not
an alkali metal?
lithium
calcium
cesium
All are alkali metals
10
Which of the following elements would you expect to have the greatest electro-negativity?
B
Ba
Li
F
11
Which of the following elements is from a group that rarely undergo chemical reactions?
argon
aluminum
bromine
tin
12
What is the lowest energy state of an atom called?
valence shell
quantum state
ground state
basement shell
13
What is the maximum number of valence electrons an atom may have?
4
10
8
2
14
The number of complete waves that pass by a point in a given time is the wave's
amplitude
.
False
True
15
What is the probable formula of the bromide of beryllium?
BeBr
BeBr2
BeBr3
BeBr4
16
The theory that regards light that has characteristics of both particles and waves is the
matter wave
theory of light.
True
False
17
The distance between two corresponding points on successive waves is called the
wavelength
.
True
False
18
Who developed the periodic table of the elements?
Johann Döbereiner
John Newlands
Henry Moseley
Dmitri Mendeleev
19
How many valence electrons does boron have?
2
3
1
4
20
Which of the following compounds is a product of the reaction between lithium and water?
LiH
Li2OH2
Li2O
LiOH
21
The high points of a wave are called
crests
.
False
True
22
The elements in column 18 are the __________.
Alkali
Noble gases
Alkaline earth
Halogens
23
Refer to the periodic table:The elements in column 17 are the __________.
Halogens
Alkaline earth
noble gases
Alkali
24
Which of the following atoms would you expect to be the smallest?
Ge
Al
Sr
S
25
Which of the following ions would you expect to require the least energy to form?
Cl⁺
Mg⁺
P⁺
Na⁺
26
What can the amplitude of a wave be considered a measure of?
Frequency
Speed
Strength
Wavelength
27
Elements in the same column of the periodic table belong to the same
period
.
True
False
28
What is the electron configuration of silicon?
[Ne]3s²3p²
[Ne]3p⁴
[Ne]3s¹3p³
[Ne]3s⁴
29
What do the lines in the hydrogen spectrum represent?
Photons emitted as electrons collide with the nucleus
All of the above
Photons emitted as electrons drop from higher to lower energy levels
Photons emitted as electrons gradually spiral closer to the nucleus
30
Which of the following is a halogen?
None are halogens
oxygen
xenon
iodine
31
How many valence electrons does tin have?
8
2
6
4
32
Which of the following categories consists of elements that usually exist as 2+ ions?
alkaline earth metals
chalcogen
halogens
alkali metals
33
Elements arranged in order of increasing atomic number, there is a repetition of their chemical and physical properties
Periodic Law
Hund's Law
Aufbau principle
Pauli exclusion principle
34
What are individual "packets" or quanta of light energy called?
Fermions
Phosphons
Lumions
Photons
35
The low points of a wave are called
valleys
.
True
False
36
The group referred to as the "salt formers" because they commonly react with metals to form salts is the
chalcogens
.
True
False
37
Which laboratory instrument would be used for to observe the spectrum of a star
laser
colorimeter
mass spectrometer
spectrometer
38
Which of the following categories includes vanadium, platinum, and gold?
alkali metals
transition metals
inner transition metals
alkaline earth metal
39
The order of all forms of electromagnetic radiation in order of frequency and wavelength is the
electromagnetic spectrum
False
True
40
When combining Chlorine gas with potassium Which of the following properties of chlorine is
most
important
electron affinity
atomic radius
first ionization energy
electronegativity
41
Refer to the periodic table:The elements in column 1 are the __________ metals.
Alkaline earth
Halogens
Alkali
Noble gases
42
If the wavelength of a light wave decreases, how must its frequency change?
Fluctuate
Decease
Increase
Remain the same
43
When an element is vaporized and heated in a flame or an electric arc, the light emitted forms a
continuous
spectrum.
True
False
44
Which of the following statements
best
explains why the 4s orbital fills before the 3d orbital?
The orbitals fill in order of increasing n+l.
Electron repulsion causes energy overlap between the electron shells.
Orbitals' letters were chosen to fill in reverse alphabetical order.
The electrons' attraction for the nucleus pulls the 4s orbital inward.
