The History of the Periodic Table Flashcards

1
Q

He defined an element as a substance that cannot be broken down into a simpler substance by a chemical reaction

A

Antoine-Laurent De Lavoisier

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2
Q

He tried to discover the Philosopher’s Stone - a mythical object that was supposed to turn inexpensive base materials into gold

A

Hennig Brand

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3
Q

The elements in a triad had _____ chemical properties and _____ physical properties

A

Similar, orderly

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4
Q

In 1829, Dobereiner classified some elements into groups of three, which he called?

A

Triads

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5
Q

What century did the chemists began to categorize the elements according to similarities in their physical and chemical properties

A

19th Century

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6
Q

In 1829, he classified elements into triads

A

Johann Wolfgang Dobereiner

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7
Q

First person in history to discover a new element

A

Hennig Brand

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8
Q

In 1669, Brand’s experiments with distilled human urine resulted in the production of a glowing white substance, which he called?

A

Cold Fire

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9
Q

English physician and chemist, in 1815 he noticed that atomic weights seemed to be multiples of that of hydrogen

A

William Prout

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10
Q

He created the Early Periodic Table

A

Dmitri Mendeleev

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11
Q

What year did Mendeleev discovered the Early Periodic Table?

A

1869

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12
Q

He created the Modern Periodic Table

A

Henry Moseley

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13
Q

Law of Octaves in 1864

A

John Alexander Reina Newlands

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14
Q

Element (O) and Compound (H₂O) symbols

A

Jons Jacob Berzelius

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15
Q

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

A

Alexandre-Emile Beguyer de Chancourtois

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16
Q

1869, Proposed a table to organize elements by atomic mass

A

Lothar Meyer

17
Q

The first scientist to publish an organized periodic table of the known elements

A

Dmitri Mendeleev

18
Q

In 1913, he decided to arrange the periodic table by the number of protons, a.k.a the atomic number

A

Henry Moseley