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Quiz von Brianna Lalinde, aktualisiert more than 1 year ago
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Erstellt von Brianna Lalinde
vor etwa 2 Jahre
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Frage 1
Frage
Determine the total number of electrons present in the atom, molecule or ion below: N2
Antworten
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10
-
9
-
12
-
14
Frage 2
Frage
A gamma ray of wavelength 1.00 X 10^-8 cm has enough energy to remove an electron from a hydrogen atom
Antworten
- True
- False
Frage 3
Frage
How many protons are in a 127 I- ion?
Antworten
-
55
-
54
-
50
-
53
Frage 4
Frage
Determine the total number of electrons present in the atom, molecule or ion below: BH3
[blank_start]8[blank_end]
Antworten
-
8
Frage 5
Frage
Which of the following pairs can be used to illustrate the law of multiple proportions?
Antworten
-
NO and NO2
-
H20 and HCl
-
NH4 and NH4Cl
-
ZnO2 and ZnCi2
-
CH4 and CO2
Frage 6
Frage
After an anion has lost an electron it becomes a/an and has a charge.
Antworten
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Anion, Positive
-
Isotope, Positive
-
Anion, Negative
-
Cation, Positive
-
Compound, Positive
Frage 7
Frage
Which one of the following substance is not a chemical compound?
Antworten
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Co
-
HF
-
H2S
-
NO
Frage 8
Frage
When strontium salt is ignited it burns with a red flame. The frequency of the light given of by this flame is greater than
Antworten
-
Gamma rays
-
x-rays
-
yellow light
-
ultraviolet light
-
infrared light
Frage 9
Frage
How many electrons are present in Be2+ ion?
Antworten
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4
-
6
-
2
-
9
-
7
Frage 10
Frage
A pure substance composed of two or more different elements is a(n)? [blank_start]Compound[blank_end]
Antworten
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Compound
Frage 11
Frage
An atom containing 34 Protons 43 Neutrons and 34 electrons would have the symbol?
Antworten
-
77Se
-
77Ir
-
77Tc
-
43Se
-
43Te
Frage 12
Frage
The scientist who discovered the law of conservation of mass and is called the father of modern chemistry is?
Antworten
-
Lavoisier
-
Boule
-
Rutherford
-
Avagadro
Frage 13
Frage
Which of the following is incorrect?
Antworten
-
the lowest possible energy state of a molecule or atom is called it's ground state
-
diffraction produces both constructive and destructive interference
-
the emission spectrum of hydrogen contains a continuum of colors
-
Niels Bohr developed a quantum model for the hydrogen atom
-
All matter displays both particle and wavelike characteristics
Frage 14
Frage
Mendeleev is given the most credit for the concept of periodic table elements because:
Antworten
-
he grouped elements into traids of similar properties
-
he emphasized it's usefulness in predicting the existence and properties in unknown elements
Frage 15
Frage
Wherever it is found water always contains oxygen and hydrogen in the mass ration 8 to 1. taken by itself this fact demonstrates what natural law?
Antworten
-
conservation of mass
-
definite composition
-
multiple proportions
-
the atomic theory
-
periodicity
Frage 16
Frage
Rutherford bombarded gold foil with alpha (a) particles and found that a small percentage of the particles were deflected. Which of the following was not accounted for by the model he proposed for the structure of atoms?
Antworten
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the small size of the nucleus
-
the charge on the nucleus
-
the total mass of an atom
-
the existence of protons
-
the presence of electrons outside the nucleus
Frage 17
Frage
which of these isotopes have the greatest number of neutrons?
Antworten
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38 Cl
-
40 Ar
-
40 K
-
40 Ca
-
38 Sc
Frage 18
Frage
which of the following is an example of quantitative observation?
Antworten
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the piece of metal is longer than a piece of wood
-
solution 1 is much darker than solution 2
-
the liquid in beaker A is blue
-
the temp. of liquid is 60 degrees C
-
at least two of the above observations
Frage 19
Frage
Fe has that is unpaired in it's d orbitals
Antworten
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one electron
-
two electrons
-
three electrons
-
four electrons
Frage 20
Frage
Infrared radiation from the sun has a wavelength of 6200nm. Calculate the energy of one photon of that radiation
Antworten
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4.1 x 10 -39 J
-
4.1 x 10 -30 J
-
3.2 x 10 -29 J
-
3.2 x 10 -26 J
-
between 10-20 and 10-19 J
Frage 21
Frage
How many protons and electrons are present in Br- ion? [blank_start]35p 36e[blank_end]
Antworten
-
35p 36e
Frage 22
Frage
An atom of the isotope chlorine-39 consists of the photons, neutrons and electrons? [blank_start]17p 22n 17e[blank_end]
Antworten
-
17p 22n 17e
Frage 23
Frage
Which mass law is demonstrated here?
Antworten
-
Law of conservation of mass
-
law of definite composition
-
law of conservation of mass and law of definite compositions
-
law of conservation of mass and law of multiple proportions
Frage 24
Frage
The chemist credited for inventing a set of symbols for writing elements and system for writing the formulas of compounds (and for discovering selenium, silicon, and thorium) is:
Antworten
-
Bohr
-
Berzelius
-
Planck
-
Maldeeve
Frage 25
Frage
A [blank_start]element[blank_end] is a pure substance that is composed of only one type of atom.
Antworten
-
element
Frage 26
Frage
What is the correct symbol for Potassium? [blank_start]K[blank_end]
Antworten
-
K
Frage 27
Frage
[Ne]3s^2 3p^5 [blank_start]Cl, 1[blank_end]
Antworten
-
Cl, 1
Frage 28
Frage
The first scientist to show that atoms emit any negative particles was?
Antworten
-
J.J Thompson
-
William Thompson
-
John Dalton
-
Ernest Rutherford
Frage 29
Frage
Rutherford's experiment with alpha particles scattering by gold foil established that?
Antworten
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Electrons are negative
-
Electrons bounce
-
Protons are not evenly distributed
Frage 30
Frage
The scientist who discovered the law of conservation of mass and is also called the modern father of chemistry? [blank_start]Lavoisier[blank_end]
Antworten
-
Lavoisier
Frage 31
Frage
What is the name of the element with the symbol Cr? [blank_start]Chromium[blank_end]
Antworten
-
Chromium
Frage 32
Frage
Consider the following two compounds: H20 and H2O2, according the the law of multiple proportions the ration of hydrogen atoms per gram of oxygen in H2O to hydrogen atoms per gram of oxygen in H2O2 is
Antworten
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2;2
-
3;2
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1;2
-
2;1
Frage 33
Frage
What is the I quantum number for 4f orbitals? [blank_start]3[blank_end]
Antworten
-
3
Frage 34
Frage
How many electrons in an atom can have the quantum numbers n=3, I=2? [blank_start]10[blank_end]
Antworten
-
10
Frage 35
Frage
Which subatomic particle was discovered using cathode ray? [blank_start]Electrons[blank_end]
Antworten
-
Electrons
Frage 36
Frage
Bluetooth headsets use microwave radiation with a wave length of 12.32cm, what is the frequency of the light given of the electromagnetic radiations (s-1) Enter is expo format. [blank_start]2.43E9[blank_end]
Antworten
-
2.43E9
Frage 37
Frage
J.J Thompson
Antworten
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discovered the nucleus
-
measured the charge of electron
-
discovered x-rays
-
measured the charge/mass ratio of an electron
-
invented the cathode ray tube
Frage 38
Frage
What is the number of Neutrons and electrons in the ion 209Bi2+ [blank_start]207[blank_end]
Antworten
-
207
Frage 39
Frage
Who is credited with discovering the atomic nucleus? [blank_start]Rutherford[blank_end]
Antworten
-
Rutherford
Frage 40
Frage
Which inventor is mismatched?
Antworten
-
Lavoisier; law of conservation of mass
-
Proust; mass of an electron
-
Dalton; atomic theory
-
Mendeleev; periodic table
-
Arrhenius; acids produce H+ in water
Frage 41
Frage
Determine the total number of electrons present in the atom; NH4+ [blank_start]10[blank_end]
Antworten
-
10
Frage 42
Frage
Which mass is demonstrated by the observation that a sample of potassium chloride from Chile contains the same percent by mass of potassium as one from Poland? [blank_start]Law of definite composition[blank_end]
Antworten
-
Law of definite composition
Frage 43
Frage
Which of the following is classified as an element?
Antworten
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I2
-
NO
-
KCl
-
C6H12O6
-
CO
Frage 44
Frage
Which of the following statements refers to the Heisenberg uncertainty principles?
Antworten
-
It is impossible to accurately know both the exact location and momentum of a particle
-
The exact position of an electron is uncertain
Frage 45
Frage
A hypothesis is a
Antworten
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mathematical formula that models a pattern of behavior
-
concise statement of a behavior that is always the same under the same conditions
-
set of experiments designed to test a theory
-
well tested, unifying principle that explains facts
-
tentative explanation or predictions based upon experimental observations
Frage 46
Frage
The number of nucleons (Protons and Neutrons) in a 236U2+ nucleus? [blank_start]236[blank_end]
Antworten
-
236
Frage 47
Frage
All of the following are true except?
Antworten
-
the n=3 shell has no f subshell
-
there are three p orbitals in every shell of an atom then n=1 shell
-
all s orbitals have a spherical shape
-
each d subshell has five d orbitals
-
the energiesof subshell in the shells (energy levels) of a hydrogen atom vary as s<p<d etc.
Frage 48
Frage
According to the Aufbau principle which sublevel is filled after the 5s sublevel?
Antworten
-
5p
-
4f
-
3d
-
4d
-
5d
Frage 49
Frage
What is the atomic mass for the halogen that lies in period 5?
Antworten
-
131.3 amu
-
127.6 amu
-
approx. 210
-
53 amu
Frage 50
Frage
Which of the following sets of elements have the [noble gas] ns^2 np^2
Antworten
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O, S, Se, Te, Po
-
N, P, As, Sb, Bi
-
Cl, Br, I, At
-
C, Si, Ge, Sn, Pb
-
Tl, Zr, hf
Frage 51
Frage
How many unpaired electrons are there in the ground state of a manganese atom?
Antworten
-
1
-
2
-
4
-
5
-
0
Frage 52
Frage
How many unpaired electrons are there in a manganese atom?
Antworten
-
1
-
2
-
4
-
5
-
0
Frage 53
Frage
Rank the following atoms in order of the largest to the smallest atomic radius: Al, P, Cl, K
Antworten
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K>Al>P>Cl
-
Al>K>P>Cl
-
P>Al>K>Cl
-
K>P>Al>Cl
Frage 54
Frage
Larger first ionization energy, Li or Be? [blank_start]Be[blank_end]
Antworten
-
Be
Frage 55
Frage
Which of the following process represents the ionization energy of bromine?
Antworten
-
Br(I) -> Br+ (g) + e-
-
Br(g) -> Br+ (g) + e-
-
Br(S) -> Br+ (S) + e-
-
Br(S) -> Br+ (g) + e-
-
Br2(g) -> Br2+ (g) + e-
Frage 56
Frage
How many electrons can be contained in the orbitals of a subshell with I=3?
Antworten
-
10
-
14
-
6
-
7
-
5
Frage 57
Frage
In a given period this group has the element with the largest atomic radius.
Antworten
-
Group 3A
-
Group 4A
-
Group 2A
-
Group 1A
-
Group 5A
Frage 58
Frage
What set of the elements below includes just the nonmetals?
GA, P, Ra, Li, La, Xe
Antworten
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P, I, Xe
-
P, I, La
-
I, Xe, Ra
-
Ga, P, Xe
-
P, I, Li
Frage 59
Frage
Which of these subshells is incorrect?
Antworten
-
5s
-
2p
-
3f
-
4d
-
4f
Frage 60
Frage
Which of the following subshells in a typical polyelectronic atom fills last?
Antworten
-
1s
-
4d
-
4s
-
5p
-
More info. is needed =
Frage 61
Frage
In a modern periodic table, the order in which the elements are placed is based on
Antworten
-
atomic mass
-
mass number
-
atomic series
-
atomic number
-
atomic size
-
chemical reactivity
Frage 62
Frage
Which of the following atoms is a non-metal?
Antworten
-
Fr
-
Ge
-
N
-
Hg
-
None of these are non-metals
Frage 63
Frage
Hydrogen and lithium react very differently, although they are both members of Group 1. What is the primary reason for this difference?
Antworten
-
Electron affinity increases going down a group
-
The metallic character increases going down a group
-
The ionization energy increases going down
-
There is a very large difference in the atomic radii of H and Li
-
Electronegativity increases going down a group
Frage 64
Frage
With increasing value of the quantum number l, subshells are named s, p, d, f, g, h, i, etc.
How many l=4 orbitals are allowed in a l=4 subshell?
Enter your answer as a whole number without units.
[blank_start]9[blank_end]
Antworten
-
9
Frage 65
Frage
Consider the following orderings.
I.
Na + < Mg 2+ < Al 3+ < Si 4+
II.
Be < Mg < Ca < Sr
III.
I < Br < Cl < F
IV.
Al < Si < P < Cl
Which of these give(s) a correct trend in ionization energy?
Antworten
-
1, 3,4
-
none of them
-
2, 4
-
1, 4
-
3
Frage 66
Frage
Ionization energy increases with an increasing number of electrons
Antworten
- True
- False
Frage 67
Frage
An atom of which of the following elements has the smallest atomic radius?
Antworten
-
At
-
F
-
I
-
Br
-
Cl
Frage 68
Frage
Determine the number of unpaired electrons in ground state atoms of P and Cl, respectively.
Antworten
-
5, 3
-
5, 1
-
3,1
-
3,2
-
3, 5
Frage 69
Frage
What is the number of unpaired electrons in sulfur atom?
Antworten
-
1
-
2
-
3
-
4
Frage 70
Frage
Give the ground-state electron configuration, symbol, and group number from each partial (valence-level) orbital diagram.
Antworten
-
[Xe] 5s24d3; Ta; 5B (5)
-
[Kr] 5s24d3; Nb; 5B (5)
-
[Ar] 5s24d3; V; 5B (5)
-
[Kr] 5s24d3; Tc; 7B (7)
-
none of these
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