Democritus,J.J tompson,Dalton,Chadwick all contributed to the atom. They but there ideas together to build on each other to get the model we have today.
Democritus- was the first on who created the idea of an atom.
jj tompson-he discovered the first electron. He created the idea of the structure of the atom.
dalton-he created his atomic therory.
chadwick-discovered the nuetron.
the difference between scientist was they were all in different time periods and use different materials to figure atuff out.
the time periods helped with there discoveries in many ways because it affected the equipment they had to use.they also helped on each others discoveries.
the atomic theory is still a theory because it has not been proven every time sometimes it is wrong.
understanding the structure of an atom is very important because everything is based and made up of atoms.
Wednesday, November 3, 2010
Monday, September 27, 2010
Micah Allsup
The scientists who contributed to the discovery of the atom include: Democritus, John Dalton, J.J. Thompson, Rutherford, and Chadwick. All of their ideas came together and created what we call the atom.
-Democritus- was the first to come up with the term "atom". He stated that matter consisted of tiny particles that he named atom which comes from two Greek words meaning invincible.
- John Dalton- conducted a series of experiments and realized that these "atoms" had a definite composition by weight. Dalton then came up with a theory:
Dalton’s Atomic Theory
1. All matter is composed of very small indivisible particles called atoms
2. Atoms of the same element are alike in weight and other properties. Atoms
of different elements are different in weight and other properties.
3. Compounds are formed by the union or separation of definite numbers of atoms
4. Atoms do not divide in chemical reactions; only whole atoms unite with other atoms.
Dalton combined his studies with another chemist named Proust to come up with the Law of Definite Proportions. Dalton’s Theory also proves the law of conservation of mass which had previously been stated by Lavoisier.
The last scientist to make his theory about the atom was Niels Bohr in 1913.
It is important to know about the atom because we are all made up of them, and it makes up everything around us.
-Democritus- was the first to come up with the term "atom". He stated that matter consisted of tiny particles that he named atom which comes from two Greek words meaning invincible.
- John Dalton- conducted a series of experiments and realized that these "atoms" had a definite composition by weight. Dalton then came up with a theory:
Dalton’s Atomic Theory
1. All matter is composed of very small indivisible particles called atoms
2. Atoms of the same element are alike in weight and other properties. Atoms
of different elements are different in weight and other properties.
3. Compounds are formed by the union or separation of definite numbers of atoms
4. Atoms do not divide in chemical reactions; only whole atoms unite with other atoms.
Dalton combined his studies with another chemist named Proust to come up with the Law of Definite Proportions. Dalton’s Theory also proves the law of conservation of mass which had previously been stated by Lavoisier.
The last scientist to make his theory about the atom was Niels Bohr in 1913.
It is important to know about the atom because we are all made up of them, and it makes up everything around us.
Micah Allsup
The scientists who contributed to the discovery of the atom include: Democritus, John Dalton, J.J. Thompson, Rutherford, and Chadwick. All of their ideas came together and created what we call the atom.
-Democritus- was the first to come up with the term "atom". He stated that matter consisted of tiny particles that he named atom which comes from two Greek words meaning invincible.
- John Dalton- conducted a series of experiments and realized that these "atoms" had a definite composition by weight. Dalton then came up with a theory:
Dalton’s Atomic Theory
1. All matter is composed of very small indivisible particles called atoms
2. Atoms of the same element are alike in weight and other properties. Atoms
of different elements are different in weight and other properties.
3. Compounds are formed by the union or separation of definite numbers of atoms
4. Atoms do not divide in chemical reactions; only whole atoms unite with other atoms.
Dalton combined his studies with another chemist named Proust to come up with the Law of Definite Proportions. Dalton’s Theory also proves the law of conservation of mass which had previously been stated by Lavoisier. The last scientist to make his theory about the atom was Niels Bohr in 1913.
It is important to know about the atom because we are all made up of them, and it makes up everything around us.
-Democritus- was the first to come up with the term "atom". He stated that matter consisted of tiny particles that he named atom which comes from two Greek words meaning invincible.
- John Dalton- conducted a series of experiments and realized that these "atoms" had a definite composition by weight. Dalton then came up with a theory:
Dalton’s Atomic Theory
1. All matter is composed of very small indivisible particles called atoms
2. Atoms of the same element are alike in weight and other properties. Atoms
of different elements are different in weight and other properties.
3. Compounds are formed by the union or separation of definite numbers of atoms
4. Atoms do not divide in chemical reactions; only whole atoms unite with other atoms.
Dalton combined his studies with another chemist named Proust to come up with the Law of Definite Proportions. Dalton’s Theory also proves the law of conservation of mass which had previously been stated by Lavoisier. The last scientist to make his theory about the atom was Niels Bohr in 1913.
It is important to know about the atom because we are all made up of them, and it makes up everything around us.
Chemistry
Not sure if I put this in the right spot.
Chemistry
The main characters of the development of the atom would be Democritus, John Dalton, Chadwick, and JJ Thompson. Democritus developed the coined the term "atom". He thought that one could break particles down and keep on doing so until it came to it's simplest form, calling them atoms. John Dalton was the first to propose the existence of atoms. Chadwick discovered the neutron and Thompson discovered the electron. The thing that made them different was that they worked with different materials since not all of them had the resources another person might have had. The time period between all theses scientist played a great roll because technology had a play in it and the most important thing was that they can study and research was is wrong and what can be right. Of course it mattered as to whether they had money and where they grew up. Without those subjects playing a role on the scientists life, they would probably and most likely go into a different profession that interests them.
The atomic theory is still a theory because it hasn't been proven every time it has been tested. It matters as to why we understand the structure of the atom because one can classify and understand properties better if we know how many protons, electrons, and neutrons reside within the atom.
The atomic theory is still a theory because it hasn't been proven every time it has been tested. It matters as to why we understand the structure of the atom because one can classify and understand properties better if we know how many protons, electrons, and neutrons reside within the atom.
Tabatha Secrease
History of the Atom
-Who were the main characters in the development of the atom?
- Why were they vital to the development of the atom?
-Who were the main characters in the development of the atom?
-John Dalton
-J.J Thomson
-Ernest Rutherford
-Neils Bohr
-Lavosier
-Democritus
-Curie
-Mosely
-Schrodienger
-Chadwick
-Femming
-Millikan
-Fermi
- Why were they vital to the development of the atom?
-John Dalton(1803): Developed atomic theory stated that matter is compossed of atoms of differing weights and combine in simple ratios by weight.
-J.J Thomson(1898): First to discover the electron.
-Ernest Rutherford(1909-1911): Came up with a theory of the structure of the atom and first to discover the proton.
-Neils Bohr(1913): Made numerous contributions to the understanding of atomic structure and quantum mechanics.
-Lavosier(1777): Clarified the concept that an element cannot be broken down by chemical analysis, also devised a theory of the formation of chemical compounds from elements.
-Democritus(442B.C.): Developed atomic theory of the universe, consisted of modern principles of conservation of energy and irreducibility of matter.
-Curie(1898): Curie and his wife stated that radioactive materials cause atoms to break down releasing radiation in the form of energy.
-Mosely(1887-1915): Helped contribute to the development of the periodic table.
-Schrodienger(1926): explained the movement of an electron in an atom as a wave.
-Chadwick(1931): First to discover the neutron and measured the energy of protons emerging from hydrogen atoms.
-Flemming(1881-1955): Contributions in the medical field discovered many antibiotics including Penicillin.
-Millikan(1908-1917): Dealt with
fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces.
-Fermi(1901-1954): Discovered new radioactive elements produced by neutron irradiation supervised the design and assembly of an atomic pile known today as a "nuclear reactor".
-What made them different if anything?
- All of these scientists made a new discovery by either coming up with their own theory and testing it until they prove it to be true and make it a law or by using a previous theory from another scientist and just modifying it a little or even a lot to make it more accurate and to prove them as laws and get the credit for it. A lot of times, scientists will take a theory and use the findings of another scientist and do their own experimenting then compare and contribute what they find to help in the understanding of the theory.
- Think about your lessons in history and discuss how the time period that they lived in determined the outcome of their discovery/ or how it influenced those individuals to be the names that we know today (aka did it matter where they grew up or if they had money?)
- Think about your lessons in history and discuss how the time period that they lived in determined the outcome of their discovery/ or how it influenced those individuals to be the names that we know today (aka did it matter where they grew up or if they had money?)
- The time period in which the scientist lived may have affected the outcome to an extent, but for the most part the only limitation of earlier time periods was the technology. Although there wasn't as much technology available, there are scientists from earlier time periods who discovered and contributed more than scientists in a more advanced time period. For example John Dalton developed the atomic theory in 1803 and Neils Bohr contributed to the understanding of the atomic structure in 1913, John Dalton was from a much earlier time but what he discovered was the base of the discovery and understanding of the atom and without him Bohr's discovery wouldn't have happened.
- Why do we consider the atomic theory still a theory? What are the new developments-
- Why do we consider the atomic theory still a theory? What are the new developments-
- The atomic theory is still considered a theory because it has not been proven true every single time it is tested, therefore it cannot be created into a law. There have been multiple new developments of the atomic theory as shown in the following website:
http://www.chem1.com/acad/webtext/intro/AT.html
- Why does it matter that we understand the structure of the atom?
- Why does it matter that we understand the structure of the atom?
- It is important that we understand the structure of the atom because this entire world is composed of atoms, it is what we are and what everything around us is made up of. The understanding of the atom helps us to break down everything in life and realize how things work and what they are made up of.
Mat Groh's Post - 1st period
The scientists who contriubted to the discovery of the atom include: Democritus, John Dalton, J.J. Thompson, Rutherford, and Chadwick. All of their ideas came together and created what we call the atom.-Democritus- was the first to come up with the term "atom". He stated that matter consisted of tiny particles that he named atom which comes from two Greek words meening invincible.- John Dalton- conducted a series of expirements and realized that these "atoms" had a definite composition by weight. Dalton then came up with a theory:Dalton’s Atomic Theory1. All matter is composed of very small indivisible particles called atoms2. Atoms of the same element are alike in weight and other properties. Atoms of different elements are different in weight and other properties.3. Compounds are formed by the union or separation of definite numbers of atoms4. Atoms do not divide in chemical reactions; only whole atoms unite with other atoms.Dalton combined his studies with another chemist named Proust to come up with the Law of Definite Proportions. Dalton’s Theory also proves the law of conservation of mass which had previously been stated by Lavoisier.- J.J. Thompson: discovered the electron in 1895.- Chadwick: discovered the neutron.- Rutherford: discovered the proton.-Bohr helped discover one of the three atomic models along with Rutherford and J.J. Thompson.The difference between all of these scientists was that they were all aiming for different goals; however, they had to find new discoveries based on ones already found. For example, using the Gold Foil experiement and experiments conducted by Lavosier, they were able to come up with 3 atomic models. This was very impressive because the microscope was not yet invented and the atom is not able to be seen with the human eye.The place in which each of these scientists grew up and were raised has no effect on the discoveries that they made. One could come from a poor family living on a farm which much of the scientists mentioned above did, but that did not stop them from making one of the biggest discoveries in the world.The atomic theory is only a theory, and not a law because it has not been proven correct every single time that it has been tested. Atoms are indivisible under a nuclear change and the results vary. New discoveries state that on a smaller scale the atomic nucleus is being studied in order to determine the details of its structure and to develop sources of energy from nuclear fission and fusion, for the atom is not at all indivisible, as the ancient philosophers thought, but can undergo a number of possible changes.It is important that we understand the structure of the atom becuase it will enable us to know more about the world around us and to come up with new inventions such as the atomic bomb and many more.
Subscribe to:
Posts (Atom)