35423717
Descrição
Quiz por Brianna Lalinde, atualizado more than 1 year ago
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Criado por Brianna Lalinde
aproximadamente 2 anos atrás
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Questão 1
Questão
Determine the total number of electrons present in the atom, molecule or ion below: N2
Responda
-
10
-
9
-
12
-
14
Questão 2
Questão
A gamma ray of wavelength 1.00 X 10^-8 cm has enough energy to remove an electron from a hydrogen atom
Responda
- True
- False
Questão 3
Questão
How many protons are in a 127 I- ion?
Responda
-
55
-
54
-
50
-
53
Questão 4
Questão
Determine the total number of electrons present in the atom, molecule or ion below: BH3
[blank_start]8[blank_end]
Responda
-
8
Questão 5
Questão
Which of the following pairs can be used to illustrate the law of multiple proportions?
Responda
-
NO and NO2
-
H20 and HCl
-
NH4 and NH4Cl
-
ZnO2 and ZnCi2
-
CH4 and CO2
Questão 6
Questão
After an anion has lost an electron it becomes a/an and has a charge.
Responda
-
Anion, Positive
-
Isotope, Positive
-
Anion, Negative
-
Cation, Positive
-
Compound, Positive
Questão 7
Questão
Which one of the following substance is not a chemical compound?
Responda
-
Co
-
HF
-
H2S
-
NO
Questão 8
Questão
When strontium salt is ignited it burns with a red flame. The frequency of the light given of by this flame is greater than
Responda
-
Gamma rays
-
x-rays
-
yellow light
-
ultraviolet light
-
infrared light
Questão 9
Questão
How many electrons are present in Be2+ ion?
Responda
-
4
-
6
-
2
-
9
-
7
Questão 10
Questão
A pure substance composed of two or more different elements is a(n)? [blank_start]Compound[blank_end]
Responda
-
Compound
Questão 11
Questão
An atom containing 34 Protons 43 Neutrons and 34 electrons would have the symbol?
Responda
-
77Se
-
77Ir
-
77Tc
-
43Se
-
43Te
Questão 12
Questão
The scientist who discovered the law of conservation of mass and is called the father of modern chemistry is?
Responda
-
Lavoisier
-
Boule
-
Rutherford
-
Avagadro
Questão 13
Questão
Which of the following is incorrect?
Responda
-
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
Questão 14
Questão
Mendeleev is given the most credit for the concept of periodic table elements because:
Responda
-
he grouped elements into traids of similar properties
-
he emphasized it's usefulness in predicting the existence and properties in unknown elements
Questão 15
Questão
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?
Responda
-
conservation of mass
-
definite composition
-
multiple proportions
-
the atomic theory
-
periodicity
Questão 16
Questão
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?
Responda
-
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
Questão 17
Questão
which of these isotopes have the greatest number of neutrons?
Responda
-
38 Cl
-
40 Ar
-
40 K
-
40 Ca
-
38 Sc
Questão 18
Questão
which of the following is an example of quantitative observation?
Responda
-
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
Questão 19
Questão
Fe has that is unpaired in it's d orbitals
Responda
-
one electron
-
two electrons
-
three electrons
-
four electrons
Questão 20
Questão
Infrared radiation from the sun has a wavelength of 6200nm. Calculate the energy of one photon of that radiation
Responda
-
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
Questão 21
Questão
How many protons and electrons are present in Br- ion? [blank_start]35p 36e[blank_end]
Responda
-
35p 36e
Questão 22
Questão
An atom of the isotope chlorine-39 consists of the photons, neutrons and electrons? [blank_start]17p 22n 17e[blank_end]
Responda
-
17p 22n 17e
Questão 23
Questão
Which mass law is demonstrated here?
Responda
-
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
Questão 24
Questão
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:
Responda
-
Bohr
-
Berzelius
-
Planck
-
Maldeeve
Questão 25
Questão
A [blank_start]element[blank_end] is a pure substance that is composed of only one type of atom.
Responda
-
element
Questão 26
Questão
What is the correct symbol for Potassium? [blank_start]K[blank_end]
Responda
-
K
Questão 27
Questão
[Ne]3s^2 3p^5 [blank_start]Cl, 1[blank_end]
Responda
-
Cl, 1
Questão 28
Questão
The first scientist to show that atoms emit any negative particles was?
Responda
-
J.J Thompson
-
William Thompson
-
John Dalton
-
Ernest Rutherford
Questão 29
Questão
Rutherford's experiment with alpha particles scattering by gold foil established that?
Responda
-
Electrons are negative
-
Electrons bounce
-
Protons are not evenly distributed
Questão 30
Questão
The scientist who discovered the law of conservation of mass and is also called the modern father of chemistry? [blank_start]Lavoisier[blank_end]
Responda
-
Lavoisier
Questão 31
Questão
What is the name of the element with the symbol Cr? [blank_start]Chromium[blank_end]
Responda
-
Chromium
Questão 32
Questão
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
Responda
-
2;2
-
3;2
-
1;2
-
2;1
Questão 33
Questão
What is the I quantum number for 4f orbitals? [blank_start]3[blank_end]
Responda
-
3
Questão 34
Questão
How many electrons in an atom can have the quantum numbers n=3, I=2? [blank_start]10[blank_end]
Responda
-
10
Questão 35
Questão
Which subatomic particle was discovered using cathode ray? [blank_start]Electrons[blank_end]
Responda
-
Electrons
Questão 36
Questão
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]
Responda
-
2.43E9
Questão 37
Questão
J.J Thompson
Responda
-
discovered the nucleus
-
measured the charge of electron
-
discovered x-rays
-
measured the charge/mass ratio of an electron
-
invented the cathode ray tube
Questão 38
Questão
What is the number of Neutrons and electrons in the ion 209Bi2+ [blank_start]207[blank_end]
Responda
-
207
Questão 39
Questão
Who is credited with discovering the atomic nucleus? [blank_start]Rutherford[blank_end]
Responda
-
Rutherford
Questão 40
Questão
Which inventor is mismatched?
Responda
-
Lavoisier; law of conservation of mass
-
Proust; mass of an electron
-
Dalton; atomic theory
-
Mendeleev; periodic table
-
Arrhenius; acids produce H+ in water
Questão 41
Questão
Determine the total number of electrons present in the atom; NH4+ [blank_start]10[blank_end]
Responda
-
10
Questão 42
Questão
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]
Responda
-
Law of definite composition
Questão 43
Questão
Which of the following is classified as an element?
Responda
-
I2
-
NO
-
KCl
-
C6H12O6
-
CO
Questão 44
Questão
Which of the following statements refers to the Heisenberg uncertainty principles?
Responda
-
It is impossible to accurately know both the exact location and momentum of a particle
-
The exact position of an electron is uncertain
Questão 45
Questão
A hypothesis is a
Responda
-
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
Questão 46
Questão
The number of nucleons (Protons and Neutrons) in a 236U2+ nucleus? [blank_start]236[blank_end]
Responda
-
236
Questão 47
Questão
All of the following are true except?
Responda
-
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.
Questão 48
Questão
According to the Aufbau principle which sublevel is filled after the 5s sublevel?
Responda
-
5p
-
4f
-
3d
-
4d
-
5d
Questão 49
Questão
What is the atomic mass for the halogen that lies in period 5?
Responda
-
131.3 amu
-
127.6 amu
-
approx. 210
-
53 amu
Questão 50
Questão
Which of the following sets of elements have the [noble gas] ns^2 np^2
Responda
-
O, S, Se, Te, Po
-
N, P, As, Sb, Bi
-
Cl, Br, I, At
-
C, Si, Ge, Sn, Pb
-
Tl, Zr, hf
Questão 51
Questão
How many unpaired electrons are there in the ground state of a manganese atom?
Responda
-
1
-
2
-
4
-
5
-
0
Questão 52
Questão
How many unpaired electrons are there in a manganese atom?
Responda
-
1
-
2
-
4
-
5
-
0
Questão 53
Questão
Rank the following atoms in order of the largest to the smallest atomic radius: Al, P, Cl, K
Responda
-
K>Al>P>Cl
-
Al>K>P>Cl
-
P>Al>K>Cl
-
K>P>Al>Cl
Questão 54
Questão
Larger first ionization energy, Li or Be? [blank_start]Be[blank_end]
Responda
-
Be
Questão 55
Questão
Which of the following process represents the ionization energy of bromine?
Responda
-
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-
Questão 56
Questão
How many electrons can be contained in the orbitals of a subshell with I=3?
Responda
-
10
-
14
-
6
-
7
-
5
Questão 57
Questão
In a given period this group has the element with the largest atomic radius.
Responda
-
Group 3A
-
Group 4A
-
Group 2A
-
Group 1A
-
Group 5A
Questão 58
Questão
What set of the elements below includes just the nonmetals?
GA, P, Ra, Li, La, Xe
Responda
-
P, I, Xe
-
P, I, La
-
I, Xe, Ra
-
Ga, P, Xe
-
P, I, Li
Questão 59
Questão
Which of these subshells is incorrect?
Responda
-
5s
-
2p
-
3f
-
4d
-
4f
Questão 60
Questão
Which of the following subshells in a typical polyelectronic atom fills last?
Responda
-
1s
-
4d
-
4s
-
5p
-
More info. is needed =
Questão 61
Questão
In a modern periodic table, the order in which the elements are placed is based on
Responda
-
atomic mass
-
mass number
-
atomic series
-
atomic number
-
atomic size
-
chemical reactivity
Questão 62
Questão
Which of the following atoms is a non-metal?
Responda
-
Fr
-
Ge
-
N
-
Hg
-
None of these are non-metals
Questão 63
Questão
Hydrogen and lithium react very differently, although they are both members of Group 1. What is the primary reason for this difference?
Responda
-
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
Questão 64
Questão
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]
Responda
-
9
Questão 65
Questão
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?
Responda
-
1, 3,4
-
none of them
-
2, 4
-
1, 4
-
3
Questão 66
Questão
Ionization energy increases with an increasing number of electrons
Responda
- True
- False
Questão 67
Questão
An atom of which of the following elements has the smallest atomic radius?
Responda
-
At
-
F
-
I
-
Br
-
Cl
Questão 68
Questão
Determine the number of unpaired electrons in ground state atoms of P and Cl, respectively.
Responda
-
5, 3
-
5, 1
-
3,1
-
3,2
-
3, 5
Questão 69
Questão
What is the number of unpaired electrons in sulfur atom?
Responda
-
1
-
2
-
3
-
4
Questão 70
Questão
Give the ground-state electron configuration, symbol, and group number from each partial (valence-level) orbital diagram.
Responda
-
[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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