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According to Dalton's postulate how do atoms relate to elements?
Elements are formed from atoms.
How did Dalton explain the diffrences between a mixture and a compound?
Dalton explained that a mixture is a physical combination of two or more substances that retain their individual properties, whereas a compound is a chemical combination of two or more elements in fixed proportions with unique and different properties from the elements that make it up. This difference is based on the idea that compounds are formed through chemical reactions that result in the rearrangement of atoms, while mixtures can be separated physically.
Why did Dalton only list 20 elements in his table?
Dalton only listed 20 elements in his table because in his atomic theory, he believed that all elements could be explained in terms of simple ratios of the first 20 elements. At the time, only 20 elements were known and studied in depth, so Dalton's table reflected the knowledge available to him.
What is Jhon Dalton's contribution on the periodic table of elements?
John Dalton did not contribute directly to the periodic table of elements. He is best known for his work on atomic theory, which laid the foundation for the development of the periodic table by other scientists such as Dmitri Mendeleev. Dalton's atomic theory proposed that elements are composed of indivisible particles called atoms, and that all atoms of a given element are identical in mass and properties.
What is Dalton's model of an atom described as?
Dalton's theory was based on the principal that the atoms of different elements that could be distinguished by differences in their weights. In 1803, at the Royal Institution He stated this theory.
Who siad that atoms of two or more elements can combine to form compounds?
John Dalton
Which two of the three statements that make up Dalton's atomic theory are no longer regarded as true as stated by Dalton's?
All the atoms in elements are not a like
Who said elements combine in specific proportion?
john Dalton
In what year did scientist Dalton conduct experiments in combining elements?
1803 was the year that Dalton conducted experiments in combining elements.
Who was the first scientist generally accredited with putting the study of chemistry on a firm experimental basis?
John Dalton because Dalton predicted new combinations of elements; these new combinations were found providing evidence that Dalton's theory worked.
The existence of elements was first discovered by?
Dalton
Who wanted to know why elements combine in specific proportions?
John Dalton in 1803
According to Dalton's postulate how do atoms relate to elements?
Elements are formed from atoms.
What did John Dalton believed that?
John Dalton believed that all matter is composed of tiny indivisible particles called atoms, and that different elements have different types of atoms. He also proposed that atoms combine in simple whole number ratios to form compounds. Dalton's atomic theory revolutionized the study of chemistry.
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.
Who proved that elements were made of atoms?
This was John Dalton.
Was Dalton the first scientist to study matter?
no Democritus
