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ACS GENERAL CHEMISTRY // ACS CHEMISTRY GENERAL EXAM QUESTIONS AND ANSWERS 2024

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ACS GENERAL CHEMISTRY // ACS CHEMISTRY GENERAL EXAM QUESTIONS AND ANSWERS 2024ACS GENERAL CHEMISTRY // ACS CHEMISTRY GENERAL EXAM QUESTIONS AND ANSWERS 2024ACS GENERAL CHEMISTRY // ACS CHEMISTRY GENERAL EXAM QUESTIONS AND ANSWERS 2024ACS GENERAL CHEMISTRY // ACS CHEMISTRY GENERAL EXAM QUEST...

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  • August 23, 2024
  • 42
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ACS CHEMISTRY GENERAL
  • ACS CHEMISTRY GENERAL
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ACS GENERAL CHEMISTRY // ACS
CHEMISTRY GENERAL EXAM
QUESTIONS AND ANSWERS 2024


Layout of an element (mass # & atomic #) - ANSWER-


Forms of the same elements that differ in amount of neutrons - ANSWER-
isotopes


When alpha particles were shot at a metal foil target, most passed through
without deflections, while others deflected at large angles. What did this
suggest to Rutherford? - ANSWER- that the atoms of the metal were
mostly empty space, while the nucleus consisted of most of the mass which
included highly condensed positive particles (which caused the deflection).


Electron Configuration - ANSWER-


electromagnetic spectrum - ANSWER- Greater wavelength = lower
frequency
greater frequency = shorter wavelength


Light Energy Formula - ANSWER-

,Periodic Table - ANSWER-


Electrons configuration rule that states electrons do not pair until they have
to. (put one electrons in each electron domain then pair up) - ANSWER-
Hund's rule


An experimental phenomena associated with atoms having unpaired
electrons - which states such substances are attracted to magnetic fields -
ANSWER- Paramagnetism


quantum numbers - ANSWER-


What do the 4 quantum numbers stand for? - ANSWER- n = energy level
l = (n-1)
ml -l to l
mn 1/2 or -1/2 (spin)


List the quantum numbers for the s, p, d, and f orbitals - ANSWER- s 1,0,0
p 2, 1, -1-0-1
d 3, 2, -2--1-0-1-2
f 4, 3 -3--2--1-0-1-2-3


What two subatomic particles have the most mass, but occupy very little of
the volume of an atom - ANSWER- protons and neutrons


Define Isoelectronic - ANSWER- Having the same amount of electrons

,How does a sodium ion differ from a sodium atom? - ANSWER- the sodium
ion has fewer electrons


two or more compounds with the same formula but a different arrangement
of atoms in the molecule and different properties - ANSWER- isomer


two or more different physical forms in which an element can exist.
Graphite, charcoal, and diamond are all ________ of carbon. - ANSWER-
allotropes


What did Millikan discover from his oil drop experiments? - ANSWER- the
magnitude of the charge on an electron


Periods vs Groups - ANSWER-


when an atom of an electropositive atom becomes an ion it..? - ANSWER-
becomes larger


Nearly all the mass in an atom is located _________ because both ______
& ______ are located there, and each of these particles have a mass larger
than the ______ - ANSWER- inside the nucleus
protons & neutrons
electron


Classify the following as an element, compound, or mixture. If it is a
mixture, decide if it is a homogeneous or heterogeneous mixture.


1 Sugar

, 2 Spaghetti Sauce
3 Phosphorus - ANSWER- 1 compound, not a mixture
2 mixture, heterogenous
3 element


Properties that do depend on the amount of matter present. - ANSWER-
extensive


Dz^2 orbital - ANSWER-


Dxy orbital - ANSWER-


Dx^2y^2 orbital - ANSWER-


List the shape, electron domain geometry, and predicted bond angle of a
molecule with 6 electron domains - ANSWER- Octahedral
90º


List the electron domain geometry & molecular geometry of a molecule with
4 electron domains (4 bonding 0 nonbonding) - ANSWER- electron domain
geometry: tetrahedral
molecular geometry: tetrahedral


List the electron domain geometry & molecular geometry of a molecule with
4 electron domains (3 bonding 1 nonbonding) - ANSWER- electron domain
geometry: tetrahedral
molecular geometry: trigonal pyramidal

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