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John Dalton determined the atomic weights of several elements, including hydrogen, oxygen, carbon, nitrogen, and sulfur, among others. He used hydrogen as the reference point with an atomic weight of 1, assigning relative weights to other elements based on their combinations with hydrogen. Dalton's work laid the foundation for the modern understanding of atomic theory and the relative weights of elements. His findings were crucial in advancing the field of chemistry in the early 19th century.
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What does daltons fourth postulate state?
Dalton's fourth postulate states that atoms of different elements have different weights. This idea laid the foundation for the concept of atomic mass and helped to distinguish between different elements based on their atomic weights.
Who was the first to look at the atomic weights as a baasis for putting the elements in order?
The first scientist to propose arranging the elements based on their atomic weights was John Dalton in the early 19th century. Dalton's work laid the foundation for the periodic classification of elements, though it was Dmitri Mendeleev who later developed the periodic table, organizing elements by both atomic weight and properties. Mendeleev's table, published in 1869, allowed for the prediction of undiscovered elements based on their position in the table.
Did John Dalton stat that different atoms have different weights?
its not true The answer to the Question in (no)
What on Dalton's theory would you expect a carbon atom to have the same mass as an oxygen atom?
According to Dalton's atomic theory, atoms of different elements have different masses. Therefore, a carbon atom would not be expected to have the same mass as an oxygen atom, as they are distinct elements with different atomic weights. Carbon has an atomic mass of about 12 amu, while oxygen has an atomic mass of about 16 amu. Thus, Dalton's theory supports the idea that each element's atoms possess unique masses.
What elements of the greek theory did Dalton retain?
John Dalton retained several elements of Greek theory in his atomic model, particularly the idea that matter is composed of indivisible particles. He built upon Democritus's notion of atoms as fundamental building blocks of matter. Additionally, Dalton incorporated the idea that different elements consist of different types of atoms, akin to the Greek concept of different substances being made from different elemental forms. However, unlike the Greeks, Dalton provided a scientific framework that included atomic weights and the law of multiple proportions.
Who was the first scientist to determine atomic weights for elements?
The first scientist to determine atomic weights for elements was John Dalton, an English chemist and physicist.
Did John Dalton contribute to the development of the periodic table?
Dalton's new information on atomic weights allowed a Russian chemist, Dmitri Mendeleyev to create the Periodic Table of elements. This table provided the means for discovering new elements, and Dalton also proposed symbols for the elements.
What does daltons fourth postulate state?
Dalton's fourth postulate states that atoms of different elements have different weights. This idea laid the foundation for the concept of atomic mass and helped to distinguish between different elements based on their atomic weights.
Did John Dalton stat that different atoms have different weights?
its not true The answer to the Question in (no)
For what is John Dalton known?
i think he discover atomic theory.
What contributions did John Dalton make to chemistry?
John Dalton was an English scientist in the eighteenth century. He developed atomic theory and published a table of atomic weights.
Did daltons atomic theory include the idea that all atoms of all elements are the same size?
No, Dalton's atomic theory did not include the idea that all atoms of all elements are the same size. Instead, he proposed that atoms of different elements have different sizes and weights.
What evidence led Dalton to propose his atomic theory?
Dalton's atomic theory was based on his observations of chemical reactions and the Law of Multiple Proportions, which showed that elements combined in simple ratios. He also analyzed the behavior of gases and proposed that they were composed of individual particles. Additionally, Dalton's work on the behavior of gases led him to propose that atoms of different elements had different weights.
What did Dmitri Mendeleev discover?
he drew up a table that grouped elements according to their atomic weights, his table became the basis for the periodic table of elements used today.
What on Dalton's theory would you expect a carbon atom to have the same mass as an oxygen atom?
According to Dalton's atomic theory, atoms of different elements have different masses. Therefore, a carbon atom would not be expected to have the same mass as an oxygen atom, as they are distinct elements with different atomic weights. Carbon has an atomic mass of about 12 amu, while oxygen has an atomic mass of about 16 amu. Thus, Dalton's theory supports the idea that each element's atoms possess unique masses.
What did John Dalton contribute to science?
give atomic mass of elements
Did John Dalton discover the Atomic Theory?
Dalton is credited for his expanding and formulating the modern atomic theory, but it was Jouseph Louis Proust and Antoine Lavoisier who are cited as initially discovering it.
