ESAS · Question Bank

Chemistry

345 of 345 questions match · page 11 of 18. Answer in your head first, then check the solution.

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#201📘 reviewer_appEasy
What is used for coating galvanized iron a corrosion resistant material?
AMagnesium
BTitanium
CZinc
DChromium
#202📘 reviewer_appEasy
What element is commonly used in making lasers?
AChromium
BNeodymium
CPromethium
DTerbium
#203📘 reviewer_appEasy
What is regarded as the most unique element in the periodic table?
AHydrogen
BOxygen
CCarbon
DUranium
#204📘 reviewer_appEasy
What is the most abundant element in the atmosphere?
AOxygen
BNitrogen
CHelium
DInert gases
#205📘 reviewer_appEasy
What are the charges of the down, strange, and bottom quarks?
A1/3
B-1/3
C2/3
D-2/3
#206📘 reviewer_appEasy
What are the charges of the up, charmed, top quarks?
A1/3
B-1/3
C2/3
D-2/3
#207📘 reviewer_appEasy
In the definition of standard meter, a meter is 1,650,763.73 wavelengths of the red-orange line in a vacuum, for the spectrum of _______ atom.
AKrypton 86
BArgon 39
CNeon 8
DCesium 16
#208📘 reviewer_appEasy
In 1932, the American Physicist ___________ , discovered the anti-electron, or positron, predicted in 1928 by Dirac
AAlbert Einstein
BCarl David Anderson
CErnest Rutherford
DJames Chadwick
#209📘 reviewer_appEasy
What is the second most abundant element in the atmosphere?
AHydrogen
BHelium
COxygen
DNitrogen
#210📘 reviewer_appEasy
What principle states about the fundamental limitation that, for a particle as small as the electron, one cannot know exactly where it is and at the same time know its energy or how it is moving?
AAufbau principle
BUncertainty principle
CPauli exclusion principle
DKinetic molecular theory
#211📘 reviewer_appEasy
What principle states that the electrons fill the orbitals, one at a time, starting with the lowest energy orbital then to the one with higher energy?
AAufbau principle
BUncertainty principle
CPauli exclusion principle
DKinetic molecular theory
#212📘 reviewer_appEasy
What describes how the electrons are distributed among the orbitals?
AElectronegativity of the element
BElectron configuration of an atom
CEnergy state of the atom
DPauli exclusion principle
#213📘 reviewer_appEasy
The elements of groups IA, IIA, IIIA, IVA, V,.. are called main group of elements or ______
Atransitions
Brepresentatives
Cinner transitions
Dmetals or nonmetals
#214📘 reviewer_appEasy
For the representative elements, the number of valence electrons is the same as the ________
Anumber of electrons
Bnumber of neutrons
Cthe rightmost digit of the group number of the element
Dnumber of electrons less the number of neutrons
#215📘 reviewer_appEasy
For transition elements, the number of valence electrons is the same as
Athe group number
Bthe rightmost digit of the group number of the element
Cthe number of electrons less the number of neutrons
Dthe number of electrons less the number of protons
#216📘 reviewer_appEasy
The size of the atom is dependent on which of the ff:
Athe size of the nucleus
Bthe region of space occupied by its electrons
Cthe number of protons and neutrons
Dall of the choices above
#217📘 reviewer_appEasy
Who first predicted the Bose-Einstein Condensate (BEC) in 1924
AAlbert Einstein
BSatyendra Nath Bose
CCarl Weiman
DWolfgang Ketterie
#218📘 reviewer_appEasy
The ionization energy is _________ to the atomic size of atom
Adirectly proportional
Binversely porportional
Cequal to
Dnot related
#219📘 reviewer_appEasy
What refers to the measure of the atom's tendency to attract an additional electron to form anions?
APeriod number
BElectron affinity
CIonization energy
DElectronegativity
#220📘 reviewer_appEasy
Who first identified plasma in 1879?
AWilliam Crookes
BIrving Langmuir
CAlbert Einstein
DEric Cornell

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