Development of the Periodic Table

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Which elements have been known since prehistoric times?

• silver

• carbon

• helium

• gold

• uranium

Who noticed that by arranging the elements in order of increasing atomic mass, their properties repeated every eighth element?

• Antoine Lavoisier

• Lothar Meyer

• John Newlands

• Dmitri Mendeleev

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Which were features of Mendeleev's periodic table?

• elements in columns had similar properties

• atomic masses were determined by mass spectrometer

• the arrangement of elements was based on electron configuration

• blank spaces predicted elements yet to be discovered

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NGSS.HS-PS1-1

About how many the chemical elements were known by 1870?

• over 60

• over 103

• under 33

• over 92

Which is the periodic repetition of properties when the elements are arranged by increasing atomic number?

• law of octaves

• octet rule

• periodic law

• aufbau principle

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

English chemist John Newlands noticed that when the elements were arranged by increasing atomic mass, their properties repeated every eighth element. What was this law called?

• ideal gas law

• Boyle's law

• law of conservation of mass

• law of octaves

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Which are typically included for each element on the modern periodic table?

• atomic number

• melting point

• atomic mass

• origin of the name

• element symbol

Moseley improved the pattern of properties in the periodic table by arranging elements by _____

• atomic mass

• atomic symbol

• atomic radius

• atomic number

Which is a vertical column of elements in the periodic table arranged in order of increasing atomic number?

• period

• row

• group

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Which scientists contributed to the development of the periodic table?

• Ernest Rutherford

• Lothar Meyer

• Dmitri Mendeleev

• John Dalton

• John Newlands