Mendeleev

Who invented the Periodic Table?

• Mendeleev

• Bohr

• Lewis

• Democritus

who discovered the first scientific and systematic periodic table

• Henry Mosley

• Dmitri Mendeleev

• John Dalton

• sir Isaac Newton

Which scientist created the Periodic Table and arranged elements in increasing atomic mass?

• Rutherford

• Thomson

• Mendeleev

• Moseley

Mendeleev's genius was his ability to

• predict elements that were not discovered yet

• organize elements by their mass

• had an element named after himself

• organize elements by properties

Which one is correct about mendeleev's periodic law

• Properties of elements are periodic function of their atomic mass

• the physical and chemical properties of elements are periodic function of their atomic number.

• physical properties of elements are periodic function of their atomic weight.

• chemical properties of elements are periodic function of their atomic number.

How did Mendeleev arrange the elements?

• alphabetical 

• density

• melting point

• atomic mass

Tags

NGSS.HS-PS1-1

Dimitri found that there was a pattern of properties that repeated every ____ elements.

• 2

• 4

• 5

• 7

Tags

NGSS.HS-PS1-1

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 realised 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

Mendeleev classified elements based on not only atomic mass but what else?

• reactivity

• boiling points

• physical properties only 

• chemical & physical properties

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.