Part TWO PS Quiz 4A Question Preview (ID: 58412)
Part Two.
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Scientists started to notice repeating patterns when they arranged the elements in order by increasing atomic mass. This repeated pattern is called _______.
a) periodicity
b) law
c) patterns
d) sequence
In 1869, Russian chemist Dmitri Mendeleev organized the elements in a table much like our ______ periodic table.
a) ancient
b) modern
c) compressed
d) dense
The most striking features of Mendeleev’s periodic table were the _______ spaces that he left between some elements.
a) closed
b) new
c) blank
d) huge
The spaces left blank in Mendeleev’s periodic table were for _______ elements that he predicted would be found in the future.
a) metal
b) nonmetal
c) ancient
d) unknown
The discoveries of gallium (31) and germanium (32) proved that Mendeleev was _________.
a) correct
b) wrong
c) off
d) misguided
The arrangement of the _________ table relates to the structure of the atoms themselves.
a) proper
b) periodic
c) first
d) latest
English ________ Henry Moseley made an important discovery in 1914.
a) zoologist
b) botanist
c) physicist
d) chemist
Moseley recognized that he was able to use a new technique called X-ray ________ to determine the atomic number for each element.
a) micrography
b) cartography
c) radiation
d) spectroscopy
A family, or group, is a set of elements in the same _______ on the periodic table.
a) column
b) row
c) area
d) zone
The most updated versions of the periodic table include all the elements through ______ number 118.
a) isotope
b) atomic
c) chemical
d) subscript
Most importantly, each element in the group has the same number of ______ electrons, which are the electrons in the outermost energy level of a neutral atom.
a) total
b) positive
c) valence
d) visible
Scientists call a row on the periodic table a ______.
a) column
b) family
c) group
d) period
Each period represents an _______ level.
a) energy
b) subtracted
c) old
d) ancient
The row that a certain element is ______ in also designates the energy level of its valence electrons.
a) eliminated
b) located
c) subtracted
d) added
In ________, an atom could have an infinite number of energy levels, but so far we know only of elements with up to seven energy levels.
a) practice
b) discovery
c) theory
d) space
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