ACS CHEMISTRY GENERAL EXAM 2024 ACTUAL EXAM VERSION B
COMPLETE 200 QUESTIONS WITH DETAILED VERIFIED ANSWERS
ALREADY GRADED A
atomic number = - CORRECT ANSWER >>>># of protons
mass number = - CORRECT ANSWER >>>># of protons +
neutrons
the number of protons in a neutral atom will equal the -
CORRECT ANSWER >>>># of electrons
how to find the correct number of neutrons - CORRECT
ANSWER >>>>mass number - atomic number
Forms of the same elements that differ in amount of
neutrons - CORRECT ANSWER >>>>isotopes
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What particle, if lost from the nucleus, would NOT cause
a change in the atomic number? - CORRECT ANSWER
>>>>a neutron because it has no charge
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? - CORRECT 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).
An atom has a valence shell configuration of 1s1. To
which group of elements on the periodic table does it
belong? - CORRECT ANSWER >>>>IA
alkali metals
The greater the wavelength of a photon..? - CORRECT
ANSWER >>>>the lower its frequency
The greater the frequency of a photon...? - CORRECT
ANSWER >>>>the shorter its wavelength
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Give the ground-state electron configuration of an atom
in the second period - CORRECT ANSWER >>>>1s2 2s1
Electrons configuration rule that states electrons do not
pair until they have to. (put one electrons in each
electron domain then pair up) - CORRECT ANSWER
>>>>Hund's rule
An experimental phenomena associated with atoms
having unpaired electrons - which states such substances
are attracted to magnetic fields - CORRECT ANSWER
>>>>Paramagnetism
Which drop in energy level results in the greatest
emission of energy? - CORRECT ANSWER >>>>n=2 to n=1
What do the 4 quantum numbers stand for? - CORRECT
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 -
CORRECT ANSWER >>>>s 1,0,0
p 2, 1, -1-0-1
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d 3, 2, -2--1-0-1-2
f 4, 3 -3--2--1-0-1-2-3
Which element is represented by X - CORRECT ANSWER
>>>>Chromium
What two subatomic particles have the most mass, but
occupy very little of the volume of an atom - CORRECT
ANSWER >>>>protons and neutrons
Define Isoelectronic - CORRECT ANSWER >>>>Having the
same amount of electrons
How does a sodium ion differ from a sodium atom? -
CORRECT 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 - CORRECT ANSWER >>>>isomer
two or more different physical forms in which an
element can exist. Graphite, charcoal, and diamond are
all ________ of carbon. - CORRECT ANSWER
>>>>allotropes
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