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Lavoisier
Antoine-Laurent Lavoisier
Antoine-Laurent Lavoisier was a French chemist (Born August 26, 1743 - died May 8, 1794) who's scientific contributions included establishing the law of the conservation of mass, determining that combustion and respiration are chemical reactions involving a chemical he named 'oxygen' and helping create chemical nomenclature. -
Lavoisier
Lavoisier was a French chemist (Born August 26, 1743 - died May 8, 1794) who's scientific contributions included establishing the law of the conservation of mass, determining that combustion and respiration are chemical reactions involving a chemical he named 'oxygen' and helping create chemical nomenclature (the system used to name elements), along with many others. Along with all the achievements listed above, he also gave new names to substances, most of which are still used today. -
Döbereiner
A German scientist called Johann Dobereiner put forward his law of triads in 1817. Each of Dobereiner's triads was a group of three elements. The appearance and reactions of the elements in a triad were similar to each other. Dobereiner discovered that the relative atomic mass of the middle element in each triad was close to the average of the relative atomic masses of the other two elements. This gave other scientists a clue that relative atomic masses were important when arranging elements. -
Dobereiner
A German scientist called Johann Dobereiner put forward his law of triads in 1817. Each of Dobereiner's triads was a group of three elements. The appearance and reactions of the elements in a triad were similar to each other. Dobereiner discovered that the relative atomic mass of the middle element in each triad was close to the average of the relative atomic masses of the other two elements. This gave other scientists a clue that relative atomic masses were important when arranging the elements -
John Newlands
John Newlands was an English scientist born in 1837. He was the first scientist to propose a table of periodic elements in order of atomic mass. He continued the work of Döbereiner's work and used this idea of triads to arrange the elements is somewhat of a logical order according to their physical properties. He also proposed a law of octaves (in 1864) which stated that any element will act similarly to the element eight places after it. His table was arranged from hydrogen to thorium. -
Meyer
Julius Lothar Meyer was a pioneer of the Periodic Table. Meyer also wrote a book illustrating the fundamental aspects of chemistry, called Die modern Theorien der Chemie (or Modern Chemical Theory) in 1864. Meyer began working on a Periodic Table in 1868, and he released his research in 1870, one year after Mendeleev's Table was released. Meyer died in Tübingen on the 11th of April 1895. -
Mendeleev
Dimitri Mendeleev published a periodic table that allowed known elements to be grouped according to their properties.Mendeleev created cards for each of the 63 elements, noting their symbols, weights, and properties on each. When he arranged the cards in order of ascending atomic weight, grouping elements of similar properties together, the periodic table was formed. Mendeleev’s periodic table made it possible to predict properties of elements that had not yet been discovered. -
Dimitri mendeleev
Dimitri Mendeleev published a periodic table of the elements. Whilst writing a textbook for his class, Mendeleev arranged the known elements onto note cards - to be easily rearranged - according to chemical properties. Mendeleev, in writing the first periodic table, discovered that when he placed the elements in increasing atomic mass order, the elements demonstrated similar chemical behaviors repeatedly. Mendeleev discovered that there is a numerical pattern underlining the idea of matter. -
Meyer
Julius Lothar Meyer was a pioneer of the Periodic Table.Meyer also wrote a book illustrating the fundamental aspects of chemistry, called Die modern Theorien der Chemie (or Modern Chemical Theory) in 1864. Meyer began working on a Periodic Table in 1868, and he released his research in 1870, one year after Mendeleev's Table was released. Meyer died in Tübingen on the 11th of April 1895. -
Newlands
John Newlands was the first scientist to propose a table of periodic elements in order of atomic mass. He continued the work of Döbereiner's work and used this idea of triads to arrange the elements is somewhat of a logical order according to their physical properties. He also proposed a law of octaves (in 1864) which stated that any element will act similarly to the element eight places after it. His table arranged elements in seven groups of eight starting with hydrogen and ending with thorium