Thursday, October 21, 2010
Monday, October 4, 2010
Who were the main characters in the development of the atom?
John Dalton, Michael Faraday, H.G.J. Moseley, James Chadwick, J.J. Thompson, Ernest Rutherford.
Why were they vital?
John Dalton- Came up with Atomic Theory.
Michael Faraday- Cathode and anode experimentation.
H.G.J. Moseley- Showed that the periodicity was a function of the atomic number rather than of atomic mass.
James Chadwick- Proved that neutrons, and neutral particles in the nucleus, that made up half of the mass of an atom did exist.
J.J. Thompson- Finalized name of electron.
Ernest Rutherford- Studied absorption of radioactivity.
What made them different if anything?
Some scientists kept their theories as theories, and never tried to prove otherwise, and other scientists were determined to experiment and prove their theories, etc. And they solidified their results, and the time that they lived in had a difference in how accurately they made discoveries.
Think about your lessons in history and discuss how the time period they lived in determined the outcome of their discovery?
Back then, they did not have the technology we have today. If they had the technology we have now, it could've completely expanded scientists discoveries. They could have had better equipment to work with, which definitely might have played a major role in new discoveries. They also would've been able to make discoveries way quicker, because back then, they would have to guess and test basically until they got it right, when now we could just test it with technology.
Why do we consider Atomic Theory still a theory?
We still consider the Atomic Theory a theory because there are still many things about it that have yet to be completely proven; also, it has not reached it's full potential; we still have much to discover about it yet.
Why does it matter that we understand the structure of the atom?
Because we have use this stuff in our daily life, and the basic idea of the atom is structure. It's important we know the structure familiarly so we can use it to our advantage.
RoessBoss! Mine was late because you sent it to the wrong email, remember? Therefore, cut me a little slack. I had to redue it completely. >:0
John Dalton, Michael Faraday, H.G.J. Moseley, James Chadwick, J.J. Thompson, Ernest Rutherford.
Why were they vital?
John Dalton- Came up with Atomic Theory.
Michael Faraday- Cathode and anode experimentation.
H.G.J. Moseley- Showed that the periodicity was a function of the atomic number rather than of atomic mass.
James Chadwick- Proved that neutrons, and neutral particles in the nucleus, that made up half of the mass of an atom did exist.
J.J. Thompson- Finalized name of electron.
Ernest Rutherford- Studied absorption of radioactivity.
What made them different if anything?
Some scientists kept their theories as theories, and never tried to prove otherwise, and other scientists were determined to experiment and prove their theories, etc. And they solidified their results, and the time that they lived in had a difference in how accurately they made discoveries.
Think about your lessons in history and discuss how the time period they lived in determined the outcome of their discovery?
Back then, they did not have the technology we have today. If they had the technology we have now, it could've completely expanded scientists discoveries. They could have had better equipment to work with, which definitely might have played a major role in new discoveries. They also would've been able to make discoveries way quicker, because back then, they would have to guess and test basically until they got it right, when now we could just test it with technology.
Why do we consider Atomic Theory still a theory?
We still consider the Atomic Theory a theory because there are still many things about it that have yet to be completely proven; also, it has not reached it's full potential; we still have much to discover about it yet.
Why does it matter that we understand the structure of the atom?
Because we have use this stuff in our daily life, and the basic idea of the atom is structure. It's important we know the structure familiarly so we can use it to our advantage.
RoessBoss! Mine was late because you sent it to the wrong email, remember? Therefore, cut me a little slack. I had to redue it completely. >:0
Monday, September 27, 2010
The Atom!
Who were the main characters in the development of the atom?
John Dalton, Johannes Hittorf, Sir Joseph John Thompson, James Chadwich, William Conrad Roentgen, Michael Faraday, Robert Millikan, A. van den Broek, Henry Gwyn-Jeffreys Moseley, William Crookes, and Ernst Rutherford
Why were they vital to the development of the atom?
John Dalton created the Atomic Theory. Johannes Hittorf Found out that when a solid was placed between cathode and anode, shadow was cast at the end of test tube away from the cathode. Sir Joseph John Thompson rond cathode rays could be deflected by an electiric field. James Chadwich Proved that neutrons did exsitst. William Conrad Roentgen discovered X-rays. Michael Faraday found Cathode, Metal plate connected to negative end and also Anode which was connected to the positive end. Henry Gwyn-Jeffreys Moseley studied frequencies of an X-rays given off by cathodes. Ernst Rutherford sutdied the absorption of radioactivity. Robert Millikan did the Oil drop experiment. A. Van Den Broek said that a positive charge on atoms shouldnt be compared to their atomic weights it should be compared to the atomic number. William Crookes developed a vacuum pump so he can produce smaller gas pressure on cathode ray tubes.
Why do we consider the atomic theory still a theory?
Theory isnt a law, nor a guess. A theory is saying something that your sure is right and testing it and keep testing it till you get it and make it to a law. Its just been taking longer than relativity. It also applies on the biologival evolution.
What are the new developments?
It started in the late 1700's. the Atomic Theory came into mind aroun 1803 from John Dalton. He said that each kind of element has its own kind of atom. The properties that come with the elements result into their diffrent atoms.
Why does it matter that we understand the structure of the atom?
They matter to us becaus element are all around us and every single one of those elements have thier own atoms. We need to know about atoms because it helps use caculate them easier and even mixed them into compunds or mixtures.
The Atom
Who were the main characters in the development of the atom?
Democritus, John Dalton, J.J. Thompson, Ernst Rutherford, Robert Millikan, Antonius van den Broek, and James Chadwick
Why were they vital to the development of the atom?
-Democritus belived every object was made up little things called atoms; depending on the shape of the atom, the object was a certain uncuttable particle called an atom.
-John Dalton proposed the existence of atoms; also, in 1803, John Dalton created the law of multiple proportions that states that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation.
-J.J. Thompson found that there must be positively charged particles which also must carry the mass of the atom. Dalton's model is now incorrect because atoms are divisible.
-Ernst Rutherford studied the deflection of alpha particles as they were targetedat thin gold foil sheets. The positive charge and mass of an atom were concentrated in the center and only made up a small fraction of the total volume. He named this concentrated center the nucleus.
-Robert Millikan proved Thomson's hypothesis that the mass of an electron is at least 1000 times smaller than the smallest atom.
-Antonius van den Broek suggested that the positive charge on atoms should be compared to their atomic numbers, not their atomic weights.
-James Chadwick proved that neutrons, neutral particles in the nucleus that made up approximately half the mass of an atom, did exist.
What made them different?
Each experiment performed by the scientists not only led to a discovery, it led to other discoveries through various scientists and scientific methods. All these men approached their experiments with different techniques; these techniques led them to countless discoveries of the atom, such as the proton, neutron, electron, atomic mass, atomic weight, and so on.
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.
As we go further and further into the past, we realize that these men did not have the technology that we have today. By not having the use of modern technology to their advantage, it is very easy to point out flaws in their experiments and theories. Although these men did not have the advantage we have today, we can conclude that they were very intellectual and thoughtful for their time period, leading them to new discoveries.
Why do we consider the atomic theory still a theory? What are the new developments?
The Atomic Theory still has yet to be proven, even though it has stood the test of time. New discoveries and add-ons have been made to this theory. Also, we have discovered a few flaws with this theory.
Why does it matter that we understand the structure of the atom?
Atoms are the basic building blocks off all matter. We must study the atom in order to understand their basic structure and why they exist. We are surrounded and even made up of atoms. By understanding the true nature of atoms, we can learn that they are more than just "random" particles.
Democritus, John Dalton, J.J. Thompson, Ernst Rutherford, Robert Millikan, Antonius van den Broek, and James Chadwick
Why were they vital to the development of the atom?
-Democritus belived every object was made up little things called atoms; depending on the shape of the atom, the object was a certain uncuttable particle called an atom.
-John Dalton proposed the existence of atoms; also, in 1803, John Dalton created the law of multiple proportions that states that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation.
-J.J. Thompson found that there must be positively charged particles which also must carry the mass of the atom. Dalton's model is now incorrect because atoms are divisible.
-Ernst Rutherford studied the deflection of alpha particles as they were targetedat thin gold foil sheets. The positive charge and mass of an atom were concentrated in the center and only made up a small fraction of the total volume. He named this concentrated center the nucleus.
-Robert Millikan proved Thomson's hypothesis that the mass of an electron is at least 1000 times smaller than the smallest atom.
-Antonius van den Broek suggested that the positive charge on atoms should be compared to their atomic numbers, not their atomic weights.
-James Chadwick proved that neutrons, neutral particles in the nucleus that made up approximately half the mass of an atom, did exist.
What made them different?
Each experiment performed by the scientists not only led to a discovery, it led to other discoveries through various scientists and scientific methods. All these men approached their experiments with different techniques; these techniques led them to countless discoveries of the atom, such as the proton, neutron, electron, atomic mass, atomic weight, and so on.
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.
As we go further and further into the past, we realize that these men did not have the technology that we have today. By not having the use of modern technology to their advantage, it is very easy to point out flaws in their experiments and theories. Although these men did not have the advantage we have today, we can conclude that they were very intellectual and thoughtful for their time period, leading them to new discoveries.
Why do we consider the atomic theory still a theory? What are the new developments?
The Atomic Theory still has yet to be proven, even though it has stood the test of time. New discoveries and add-ons have been made to this theory. Also, we have discovered a few flaws with this theory.
Why does it matter that we understand the structure of the atom?
Atoms are the basic building blocks off all matter. We must study the atom in order to understand their basic structure and why they exist. We are surrounded and even made up of atoms. By understanding the true nature of atoms, we can learn that they are more than just "random" particles.
The Atom
So we have been discussing the beginnings of the atom, and now I want to know what you think.
-who were the main characters in the development of the atom? Democritus,Aristotle, John Dalton, Joseph John Thomson, Robert Millikan, Max Planck, Ernest Rutherford, Niels Bohr, Louis deBroglie, Erwin Schrodinger, Werner Heisenberg, and James Chadwick.
- Why were they vital to the development of the atom? They made theories about matter and the atom and through time and experiments have contributed to the knowledge of the atom we have today.
_ what made them differnt if anything? These men were thinkers who sought answers to their own questions and theories, they wanted to learn and prove their claims.
- 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?)? Democritus is probably the only one of these scientist who had problems proving his theory because of the primitive technology in the ancient Greek era. The other scientists had more advanced technology and their discoveries helped the others that did research down the road.
- Why do we consider the atomic theory still a theory? What are the new developments- would love for you to share new sources here about what you find? The atomic theory is still growing and we are still finding new elements and studying the atoms. The advances we have made through the years have really given us an understanding of the atoms and elements, but we still need to keep learning more about them.
- Why does it matter that we understand the structure of the atom? Because the structure gives us an understanding of why it is the way it is. It also allows us to spot differences that may lead to new elements and theories on atoms.
-who were the main characters in the development of the atom? Democritus,Aristotle, John Dalton, Joseph John Thomson, Robert Millikan, Max Planck, Ernest Rutherford, Niels Bohr, Louis deBroglie, Erwin Schrodinger, Werner Heisenberg, and James Chadwick.
- Why were they vital to the development of the atom? They made theories about matter and the atom and through time and experiments have contributed to the knowledge of the atom we have today.
_ what made them differnt if anything? These men were thinkers who sought answers to their own questions and theories, they wanted to learn and prove their claims.
- 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?)? Democritus is probably the only one of these scientist who had problems proving his theory because of the primitive technology in the ancient Greek era. The other scientists had more advanced technology and their discoveries helped the others that did research down the road.
- Why do we consider the atomic theory still a theory? What are the new developments- would love for you to share new sources here about what you find? The atomic theory is still growing and we are still finding new elements and studying the atoms. The advances we have made through the years have really given us an understanding of the atoms and elements, but we still need to keep learning more about them.
- Why does it matter that we understand the structure of the atom? Because the structure gives us an understanding of why it is the way it is. It also allows us to spot differences that may lead to new elements and theories on atoms.
Sunday, September 26, 2010
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