5A Development of the Periodic Table

1. Who first grouped elements in families (similar chemical and physical properties)?

• Newlands

• Mendeleev

• Dobereiner

• 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 suggested that the physical and chemical properties were related to the atomic number, rather than atomic mass?

• Meyer

• Mendeleev

• Moseley

• Newlands

In what year did Moseley release his Periodic Table of Elements?

• 1913

• 1870

• 1869

• 1864

Whose Periodic Table of Elements was the most accurate?

• Newlands'

• Mendeleev's

• Meyer's

• Moseley's

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

The periodic table is organized by the number of ______ in each element's nucleus

• neutrons
• protons
• electrons
• atoms

Tags

NGSS.HS-PS1-8

Who arranged the first periodic table.

• Mosely
• Einstein
• Mendeleev
• Bohr

What property did Menedleev use to organize his first periodic table?

• atomic number
• atomic mass
• alphabetical order
• chemical 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.