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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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Who invented the atomic theory of matter?
John DaltonA2. Many scientists contributed to our present ideas - they did not (and have not yet) sprung full blown into existence. JJ Thomson et al developed some of the atomic theory, but even today the full concept of quarks and gluons may elude us - perhaps to be embodied in string theory.
What year did Erwin Schrodinger find atomic theory?
he didn't democriths did Dalton did first.
What was John Dalton's experiment on atom's?
john dalton atom is from bigger atom into smallest atom can broken it into smallest piece / part same too atom
Where did john Dalton find the atom?
john dalton didnt find the atom democrites did... john dalton was reading and found the word atomos in a journal and decided he would change the name to atom meaning undivisible.
What high school did John Dalton attend?
John Dalton was a bright secure child. He was very smart. Infact, he was so smart in mathematics that he taught it to high school kids in a Quaker school when he was only 15 years old! John was a British chemist and physicist. His mother was Deborah Greenup of a Quaker farming family. John could of got his education was anyone. They most likely believe it was his father. John descovered a theory...... For more information on his theory, search "John Dalton's Scientific Discoveries" on google and you will find many results.
What was john Dalton atomic model?
Dalton believed that atoms were tiny indestructable units which were solid particles. We now know that atoms contain mostly empty space and are composed of a postively charged nucleus which contains protons and neutrons bonded together, and that the nucleus is surrounded by a cloud of negatively charged electrons whose cloud shape is deteremined by the probabilities of where the electrons are most likely to be located.Atomic TheoryDalton's atomic model is one of the fundamentals of physics and chemistry. This theory of atomic composition was hypothesized and partially confirmed by the English chemist and Physicist John Dalton. Dalton came with his Atomic theory as a result of his research into gases. He discovered that certain gases only could be combined in certain proportions even if two different compounds shared the same common element or group of elements. Through deductive reasoning and experimentation, he made an interesting discovery. His findings led him to hypothesize that elements combine at the atomic level in fixed ratios. This ratio would naturally differ in compounds due to the unique atomic weights of the elements being combined.This was a revolutionary idea but further experimentation by himself and others confirmed his theory. The findings became the basis of of Dalton's Atomic Laws or Model. These laws focus on five basic theorems. First, Pure Elements consist of particles called atoms. Second,atoms of an element are all the same for that element. That means gold is gold and oxygen is oxygen down to the last atom. Third, atoms of different elements can be told apart by their atomic weights. Fourth, atoms of elements unite to form chemical compounds. Finally, atoms can neither be created or destroyed in chemical reaction. The grouping only changes.The last of Dalton's atomic laws were at the time considered true for all reactions involving atoms. This was later corrected with the discovery of nuclear fission and fusion. So we now know that this only holds true for chemical reactions.Like other scientific theories, Dalton's atomic model has been perfected over time with the research and discoveries of other scientists. We now know that the atom can be divided into even smaller particles and we have even discovered the actual internal structure of the atom, even able to view it through modern technology. We now know that atomic weight is a product of the structure of the atoms as well.This atomic theory made possible modern chemistry and physics. Up until Dalton's time the atom was only considered to a philosophical construct passed down by the ancient Greeks. Dalton's ground breaking work made theory reality. This understanding the atom helped to fuel many other discoveries such as the fundamental forces and Einstein's theory of relativity. It is especially is important when one goes into Quantum physics a discipline that looks at physics at the atomic and subatomic levels.
A modern atomic theory was stated by Democritus?
Actually, Democritus was an ancient Greek philosopher who proposed an early atomic theory based on the idea that all matter is made up of indivisible particles called "atomos." However, the modern atomic theory we use today was developed by John Dalton in the early 19th century, based on experimental evidence and incorporating ideas from earlier scientists.
What did alchemists find out about the atom?
Alchemists did not discover the atom as we understand it today. They had philosophical interpretations of matter and transformations that were not based on scientific evidence or modern atomic theory. The concept of the atom emerged later through the work of scientists like John Dalton in the early 19th century.
What year did they find out Gases are made of particles separated by empty space because gases can be squashed and yet retain their masses?
The understanding that gases are composed of particles separated by empty space emerged in the early 19th century, particularly with the work of scientists like John Dalton and later, Amedeo Avogadro. Dalton's atomic theory, proposed in 1803, laid the groundwork for this understanding. The kinetic molecular theory, developed in the mid to late 19th century, further explained how gases can be compressed while retaining mass due to the space between particles.
What year did john Dalton find the atom?
1800 to 1803 I'm not sure of the exact year
What experiment did John Dalton do?
John Dalton carried out various experiments of gases to find out their relationship. For example, he experimented with oxygen and nitric oxide. He created a reaction in them for producing a third gas called nitrogen dioxide.
Contribution of john Dalton atomic theory?
Dalton is credited with the original atomic theory. He thought atoms were 'indivisible' and had no smaller parts. Thompsom discovered the electron, but hand no idea of atomic structure, and his theory was called the 'plum pedding' model of the atom. There was some positive thick fluid that the electrons were stuck in. His experiments knoched out electrons, but he could not knock out positive particles, so he thought there were none. Rutherford supervised and helped two grad, students with what is referred to as the gold foil experiment. He took the results of the experiments and mathematically analyzed them to find theat there was a very heavy, positively charged, very small central part of the atom. He called it the nucleus. So he is credited with the discovery of the nucleus, which changed atomic theory again to say that there is a heavy positively charge nucleus in the atom. But he still didn't know the relationship of the nucleus and the electron. Later Bohr came up with a theory of electrons in exact orbits, like planets orbiting the sun. Even later, more scientists changed this theory.
