The History of the Periodic Table Flashcards
He defined an element as a substance that cannot be broken down into a simpler substance by a chemical reaction
Antoine-Laurent De Lavoisier
He tried to discover the Philosopher’s Stone - a mythical object that was supposed to turn inexpensive base materials into gold
Hennig Brand
The elements in a triad had _____ chemical properties and _____ physical properties
Similar, orderly
In 1829, Dobereiner classified some elements into groups of three, which he called?
Triads
What century did the chemists began to categorize the elements according to similarities in their physical and chemical properties
19th Century
In 1829, he classified elements into triads
Johann Wolfgang Dobereiner
First person in history to discover a new element
Hennig Brand
In 1669, Brand’s experiments with distilled human urine resulted in the production of a glowing white substance, which he called?
Cold Fire
English physician and chemist, in 1815 he noticed that atomic weights seemed to be multiples of that of hydrogen
William Prout
He created the Early Periodic Table
Dmitri Mendeleev
What year did Mendeleev discovered the Early Periodic Table?
1869
He created the Modern Periodic Table
Henry Moseley
Law of Octaves in 1864
John Alexander Reina Newlands
Element (O) and Compound (H₂O) symbols
Jons Jacob Berzelius
In 1862, he devised an early form of the periodic table, which we named Vis tellurique (the ‘telluric helix’), after the element tellurium, which fell near the center of his diagram
Alexandre-Emile Beguyer de Chancourtois