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The five main points of John Dalton's atomic theory are as followed: · Elements are made of tiny particles called atoms. · All atoms of a given element are identical. · The atoms of a given element are different from those of any other element. · Atoms of one element can combine with atoms of other elements to form compounds. · A given compound always has the same relative numbers of types of atoms. · Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process. A chemical reaction simply changes the way atoms are grouped together.
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What did John Dalton do in 1803?
In 1803, John Dalton published his atomic theory, which proposed that all matter is made up of small, indivisible particles called atoms. This theory laid the foundation for modern chemistry and is considered a significant contribution to the field of science.
Statements are inconsistent with Dalton's atomic theory?
1)One problem with his atomic theory was that it claimed that all matter is composed of tiny indivisible atoms. We now know that atoms are divisible and are composed of smaller, subatomic particles (electrons, protons, and neutrons). 2)He also stated that atoms of an element are identical in mass- this is incorrect because all elements have isotopes (atoms with this same proton number but different numbers of neutrons) which means that atoms of an element do not have to have the same mass.
What was Seaborg's last major change to the Periodic Table?
Seaborg's last major change to the Periodic Table was the actinide concept. He proposed placing the actinide series below the lanthanide series to create the extended table and highlight the similarities between the two series.
Who are the scientist that develop of the concept of the atom?
Some of the key scientists who played a major role in developing the concept of the atom include John Dalton, J.J. Thomson, Ernest Rutherford, and Niels Bohr. Dalton proposed the atomic theory, Thomson discovered the electron, Rutherford conducted the famous gold foil experiment leading to the nuclear model of the atom, and Bohr developed the planetary model of the atom.
What are Differences between oxygen and nitrogen?
Oxygen is a diatomic gas with atomic number 8, while nitrogen is also a diatomic gas but has atomic number 7. Oxygen is essential for respiration and combustion, while nitrogen is important for plant growth and as a major component of the Earth's atmosphere.
Who disagrees with daltons major points of the atomic theory?
One of the main figures who disagreed with John Dalton's atomic theory was J.J. Thomson, who discovered the electron and proposed the "plum pudding" model of the atom, suggesting that atoms are composed of smaller particles and are not indivisible as Dalton proposed. Additionally, later developments in quantum mechanics and the discovery of subatomic particles contradicted Dalton's idea of atoms as solid, indivisible units. These advancements highlighted the complexity of atomic structure, leading to a more nuanced understanding of matter.
What was Dalton's major contribution to science?
Atomic Theory
What 3 major things did john Dalton do in his life?
atomic theory
What were the major points of John Dalton's atomic model?
E=mc2
What did daltons theory contribute to science?
Type your answer here... It formed the basis upon which the rest of chemistry was built.
When did bohr's develop his atomic theory?
Niels Bohr developed his atomic theory in 1913. This theory introduced the idea that electrons orbit the nucleus in specific energy levels, which was a major advancement in understanding the structure of atoms.
The two ancient greek theories of matter were the what theories?
Ancient Greeks had two major theories of matter. These were the Atomic theory of matter and the theory of pangenesis.
What major contributions did Aristotle make to the atomic theory?
Aristotle did not believe in the Atomic Theory. He believed that everything was made up of only 4 elements fire, water, air, and earth. This theory was proven incorrect as is evidenced by the periodic table of elements. In short the answer to this question is, none.
What was john Dalton's major constraint when he suggested his Atomic Theory?
John Dalton's major constraint when he suggested his Atomic Theory was the lack of experimental evidence at that time to directly support his ideas. He relied mainly on his observations and reasoning, as the technology to directly visualize atoms was not available during his time.
What was max planck major contribution to the atomic theory?
I don't know of atomic theory, but he came up with the idea that light energy acted like packetts of energy that he called photons. Thru some theoretical calculations he came up with Plank's constant that deals with the energy of different wavelengths of light.
What were two major turning points in world war 2 that led to the allied victory?
the taking of Berlin (ending ww2) and the atomic bombs.
Who established that everthing is made of atoms and developed the first major atomic theory of matter?
The concept that everything is made of atoms was established by the ancient Greek philosopher Democritus around the 5th century BCE. However, the first major atomic theory of matter was developed by John Dalton in the early 19th century. Dalton proposed that all matter is made up of indivisible atoms, each with its own unique weight and properties, and he laid the groundwork for modern chemistry through his systematic approach to atomic theory.
