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The source used in the Rutherford experiments was purifed radium contained in a thin-walled 1-mm diameter glass tube. The source strength was about 0.1 Curie, or about 4 billion nuclear decays per second. The alpha particles were allowed to pass through a small diaphragm and were directed toward a thin foil target. The detector was a small (10-6 m2) zinc sulfide screen mounted a few centimeters away from the target. (Rohlf) answer above posted by strawberry
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In Rutherfords gold foil experiment particles in dense atomic nuclei caused some alpha particles to bounce straight back from the gold foil.?
positive
Do the alpha particles in Rutherford's experiment contain electrons?
No, alpha particles are helium nuclei made up of two protons and two neutrons, with no electrons. In Rutherford's experiment, alpha particles were used to probe the structure of atoms by scattering off the positive nucleus, helping to reveal the atom's structure.
What is the use of radium in Rutherford experiment in the lead box?
Radium was used in Rutherford's experiment to act as a source of alpha particles. The lead box was used to shield the experiment from external sources of radiation interference, allowing for more accurate measurements of the alpha particles' behavior.
In rutherfords gold foil experiment what particle in dense atomic nuclei caused so alpha particles to bounce straight back from the gold foil?
In Rutherford's gold foil experiment, the alpha particles were deflected back primarily due to the presence of densely packed positive charge concentrated in the atomic nucleus, specifically due to protons. When the high-energy alpha particles, which are positively charged themselves, approached the nucleus, they experienced strong electrostatic repulsion from the protons, causing them to bounce back. This unexpected deflection provided crucial evidence that atoms have a small, dense nucleus at their center, leading to the development of the nuclear model of the atom.
How did Rutherfords alpha show Thomson?
Rutherford's alpha particle experiment demonstrated that Thomson's plum pudding model of the atom was incorrect. By directing alpha particles at a thin gold foil, Rutherford observed that some particles were deflected at large angles, indicating the presence of a dense, positively charged nucleus at the center of the atom. This unexpected result suggested that atoms have a small, concentrated core rather than being a diffuse cloud of positive charge, leading to the development of the nuclear model of the atom.
What was ernest rutherfords's experiment?
he shot tiny alpha particles throug a piece of gold foil.
In Rutherfords gold foil experiment particles in dense atomic nuclei caused some alpha particles to bounce straight back from the gold foil.?
positive
Rutherfords alpha scattering experiment showed that the charge on the nucleus of the atom must be?
Rutherford's alpha scattering experiment showed that the charge on the nucleus of the atom must be positive because the alpha particles were deflected by the concentrated positive charge in the nucleus.
What materials are needed for rutherfords gold foil experiment?
For Rutherford's gold foil experiment, you will need the following materials: thin gold foil, alpha particles, a source for the alpha particles, a fluorescent screen or detector to observe the scattered particles, and a vacuum chamber to prevent air molecules from interfering with the experiment.
What was rutherfords experiment?
he shot tiny alpha particles throug a piece of gold foil. -Apex
What was the purpose of the fluorescent screen in rutherfords experiment?
The purpose of the fluorescent screen in Rutherford's experiment was to detect the alpha particles that were deflected when they struck the gold foil. The screen would light up when hit by the alpha particles, allowing Rutherford to observe and measure the deflection pattern and infer the structure of the atom.
What caused the deflection of the alpha particles in Rutherfords gold foil experiment?
A zinc sulfide coated screen surrounding the gold foil produced a flash of light whenever it was struck by an alpha particle. By noting where the flash occurred, the scientists could determine if the atoms in the gold foil deflected the alpha particles.
How did Rutherford's alpha scattering experiment show that Thomson's plum pudding model of the atom incorrect?
Rutherfords experiment proved the existence of a nucleus as some alpha particles "bounced back" from the gold foil sample . Thomson model did not involve a nucleus and predicted just a slight deflection or none at all.
In Rutherfords gold foil experiment shown in Figure 4-1 alpha particles that bounce straight back from the foil have struck in the gold atoms?
No, they struck the nucleus of the atom. Since the alpha particles are positively charged and nucleus is positively charged as well, they repelled each other and alpha particles are repelled back
What feature of rutherfords gold foil experiment was most surprising to those who carried out the experiment?
The most surprising feature of Rutherford's gold foil experiment was the discovery that some alpha particles were scattered at very large angles, even back towards the source. This suggested that the positive charge in an atom was concentrated in a small, dense nucleus, rather than being spread out as previously thought.
In Rutherford's gold foil experiment what particles were fired at a thin piece of gold?
I believe they are called the Alpha particles and yes, they did pass through a sheet of gold foil.
Do the alpha particles in Rutherford's experiment contain electrons?
No, alpha particles are helium nuclei made up of two protons and two neutrons, with no electrons. In Rutherford's experiment, alpha particles were used to probe the structure of atoms by scattering off the positive nucleus, helping to reveal the atom's structure.
