0
What did Rutherford say about the small number of particles that bounced straight back?
Wiki User
∙ 15y ago
Rutherford fired alpha particles at a sheet of atoms in order to determine the atomic structure. The alpha particle is positively charged. Those particles that bounce straight back are the ones that hit the nucleus of the atom and were repelled by the nucleus's positive charge.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What are some interesting facts about Ernest Rutherford?
One of the elements, Rutherfordium (element number 104) is named after Ernest Rutherford!
How is Rutherford model different from the previous model?
Rutherford's model for the atom, based on the Geiger-Marsden experiment results, contained the new features of a relatively high central charge concentrated into a very small volume in comparison to the rest of the atom and with this central volume also containing the bulk of the atomic mass of the atom. later this is called as nucleus.
Why are some objects more dense than other objects?
Some objects are more dense than others due either to the mass of the particles in the material, the atomic number or how closely the particles are packed together. For example, lead, has a high density because its particles have a very high mass. But a material like polystyrene, doesn't have a high density as the particles are spaced far apart and they have a low mass value.
What does temperature tell us about particles of matter?
the temperature of the moving particles in motion.
What is avocados number?
Avogadro is the name given to the number of atoms (molecules) per mole of a substance.An avocado is some green vegetable. I am not sure about its numerical system.
What is Rutherford's experiment with gold foil and alpha particles?
The initial discovery of "Rutherford Scattering" was made by Hans Geiger and Ernest Marsden in 1909 when they performed the gold foil experiment under the direction of Rutherford, in which they fired a beam of alpha particles (helium nuclei) at layers of gold leaf only a few atoms thick. The intriguing results showed that around 1 in 8000 alpha particles were deflected by very large angles (over 90°), while the rest passed straight through with little or no deflection. From this, Rutherford concluded that the majority of the mass was concentrated in a minute, positively charged region (the nucleus) surrounded by electrons. When a (positive) alpha particle approached sufficiently close to the nucleus, it was repelled strongly enough to rebound at high angles. The small size of the nucleus explained the small number of alpha particles that were repelled in this way.
What is the phone number of the Rutherford Free Pub. Lib. in Rutherford?
The phone number of the Rutherford Free Pub. Lib. is: 201-939-8600.
What is the phone number of the East Rutherford Memorial Library in East Rutherford?
The phone number of the East Rutherford Memorial Library is: 201-939-3930.
What is the phone number of the Rutherford Library in South Bristol?
The phone number of the Rutherford Library is: 207-644-1882.
What is the explanation for the scattering experiment of Rutherford?
Rutherford conducted an experiment in which Alpha particles were fired at a gold nucleus. Most of the particles passed through unaffected. However, some were deflected by a small amount whilst an even smaller number of the particles were deflected completely. This led to the conclusion that the atom has an extremely small, central, positively charged nucleus. As both the positive alpha particle and the positive nucleus repel each other by electrostatic forces. The fact that only a small amount of particles are deflected shows that the nucleus is only a tiny central part of the atom.
If Rutherford had seen a large number of alpha particles reflected what view of the atom would we accept today?
that the nucleus of the atom was a lot larger than we now believe but the charge was not as spread out as you would expect.
How do you write 121100 as a decimal?
You idiot! That is a decimal number. Where you bounced on the head as a baby?
What describes protons?
Protons are positively charged particles found inside the nucleus of an atom. The number of protons in each atom is its atomic number. The name proton was given to the hydrogen nucleus by Ernest Rutherford in 1920.
What is the phone number of the Childrens Museum Of Rutherford County in Murfreesboro Tennessee?
The phone number of the Childrens Museum Of Rutherford County is: 615-890-2300.
What is the phone number of the Rutherford County Historical Society in Rutherfordton North Carolina?
The phone number of the Rutherford County Historical Society is: 828-287-1284.
What are some facts about Ernest Rutherford?
One of the elements, Rutherfordium (element number 104) is named after Ernest Rutherford!
How do you know that matter is made up of particles?
Rutherford's experiment started it: He passed alpha particles (which later were found to be helium nuclei, but he didnt know that) through a very thin sheet of gold; about the thickness of a thin tissue. He then measured how many particles passed through the sheet directly (without hitting anything) and how many passed through, hit something and reflected off at various angles. In doing this last step, he checked many different angles: 0, 30, 60, 120,180,240,300, 360. This shows he was a good scientist; he was thorough, precise and made no assumptions on what angles have the results he is looking for. What he found is that 0 degrees (straight through) had the most flux (number of particles per area), but that 60 and 300 had a good chunk of flux as well. This is expected and confirmed his theory called "Rutherford scattering". But what he didnt expect was that 180 (straight back) had a good chunk of flux too. This meant that most of the particles went straight through and thus the sheet of gold (which he cannot see through) is composed of empty space. But that sometimes alpha particles hit something and came right back at him. So the gold sheet is mostly empty space, but with small, heavy objects evenly spaced through it. These are the "particles"; which comes from "particula", the latin word for "little part". We know that the particles in the gold are heavy because the alpha particles have a lot of energy (previously known from other experiments). And when you hit something with a fast/heavy something else and it doesnt move, but reflects it back, then that something is heavier. So this shows that gold particles are heavy. Looking at the periodic table, this is well known by the high atomic number/mass.
