LESSON 4: THE PERIODIC TABLE OF ELEMENTS Flashcards
What year is the beginning of modern chemistry? (atoms, elements, and chemical reactions)
1661
Before the 17th century, how many elements had beed discovered?
13 elements
What were the 13 elements that had already been discovered before the 17th century?
Copper, Lead, Gold, Silver, Iron, Carbon, Tin, Sulfur, Mercury, Zinc, Arsenic, Antimony, and Chromium
He published Methods of Chemical Nomenclature
Antoine Lovoisier (1787)
What was the first to list all known elements (33)
Methods of Chemical Nomenclature
Antoine Lovoisier is also regarded as the?
Father of Modern Chemistry
He introduced the method of using letters to symbolize elements
Jons Jakob Berzelius (1814)
Berzelius proposed the first letter of what kind of name of the elements?
The latin name
What century had 50 elements been discovered?
19th Century
What else did they discover in the 19th Century?
Chemists observed that some elements shared a number of the same properties
He is known for Law of Octave
John Newlands (1863)
What did John Newlands arrange the elements based on?
The increasing Atomic weight
John Newlands classified 56 of the established elements into how many groups and based on what?
11 groups based on similar physical and chemical properties
He arranged a total of 66 elements on a table according to their atomic mass and similar properties
Dmitri Mendeleev (1869)
He created the first Period table in 1869
Dmitri Mendeleev
He introduced the concept of atomic number
Henry Moseley (1914)
He introduced the modern periodic law
Henry Moseley
What is the Periodic Law?
It states that the physical and chemical properties of the elements are periodic functions of their atomic number
What date did the international union of pure and applied chemistry approve the name and symbols of four elements? And what were this elements?
Nov 28, 2016
Nihonuim, Moscovium, Tennessine, Oganesson
The modern table is based on whos table?
Mendeleev
Who noticed the Law of Triad
Johann Dobereiner
