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WorksheetsHISORY OF PERIODIC TABLE
Total questions: 14
Worksheet time: 7mins
by alphabetical
by density
by melting point
by atomic mass
______arranged elements in a periodic table according to the increasing order of atomic number
John Newlands
Dimitri Mendeleev
Henry Mosely
Lothar Mayer
In the modern periodic table elements are arranged by:
atomic mass
valence electrons
atomic number
number of isotopes
Why were there blank spaces left in Mendeleev's periodic table?
He didn't know what to put there.
Undiscovered elements not yet known.
Multiple elements could have fit
He forgot to add the elements in
What was Dmitri Mendeleev's greatest contribution to the history of the periodic table?
He arranged all of the known elements by their atomic number
He realized that there was a pattern of reactivity which repeated every 8 elements
He predicted the existence (and properties) of new elements
He identified the "law of triads" which became the groups
Who called his observation as the “law of triads”?
John Newlands
Antoine Lavoisier
Johann Dobereiner
Which scientist arranged the 60 known elements in columns of increasing atomic mass so that each column contained seven elements?
Newlands
Meyer
Mendeleev
Moseley
Who arranged the known elements into horizontal rows of increasing atomic mass leaving gaps for as yet undiscovered elements?
Mendeleev
Meyer
Newlands
Moseley
Who constructed a similar table to Mendeleev based on increasing atomic mass but did not leave gaps?
Moseley
Meyer
Newlands
Dobereiner
Who suggested that the physical and chemical properties were related to the atomic number, rather than atomic mass?
Meyer
Mendeleev
Moseley
Newlands
Whose Periodic Table of Elements was the most accurate?
Newlands'
Mendeleev's
Meyer's
Moseley's
The statement below is a pattern discovered by a scientist in the development of the Periodic Table.
Similar properties are observed at every eight element when the elements are arranged in increasing atomic mass.
Johann W.Dobereiner
John Newlands
Dmitri Mendeleev
Henry Moseley
Antoine Lavoisier classified all elements according to certain groups such as __________
Gases
Non-metals
Metals
Metal oxides
Who named the arrangement as the Law of Octaves?
Johann W.Dobereiner
John Newlands
Dmitri Mendeleev
Henry Moseley
