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When a negatively charged surface approaches a piece of foil, electrons in the foil move to the far side, as they are repelled by the negative charge. This means that the side near the charged surface is positively charged while the far side is negatively charged. Since the electrical force decreases with increasing distance, the attraction experience by the positive near side of the foil will be slightly stronger than the repulsive force of the negative far side. As a result, the foil will experience a net attraction to the charged surface.
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Why alfa particles do not get attracted by the electrons present in the atom when gold foil is bambarded by positively charged helium ions?
They do get attracted, but their momentum is too high to be "captured" by the electrons.
Who discovered the nucleus using his gold foil experiment?
Rutherford by bombarding gold foil with positively charged particles and noting that some particles were widely deflected.
Does aluminum foil attract heat?
answ2. Heat is not 'attracted' 'repelled' by anything.Polished aluminum foil will, and thus is a thermal insulator.Aluminium metal itself is a good conductor of heat.It will reflect the sunlight and retain the heat.
What did Rutherford's gold foil expieriment tell scientists about atomic structure?
That atoms have a positively charged nucleus.
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
At the beginning of the lab for a versorium is the foil negatively charged positively charged or uncharged?
The foil was neutrally charged.
Why did Rutherford use alpha particles rather than electrons for his scattering experenment?
Because the alpha particles are positively charged. In order for the experiment to work, the positive alpha particles must be attracted to the negatively charged gold foil.
Why alfa particles do not get attracted by the electrons present in the atom when gold foil is bambarded by positively charged helium ions?
They do get attracted, but their momentum is too high to be "captured" by the electrons.
What is Ernest Rutherford's contributions to the atomic sturcture?
Rutherford's famous gold foil experiment disproved Thompson's "plum pudding" model of the atom, and instead suggested a small, central, positively charged region (the nucleus) surrounded by a cloud of negatively charged electrons.
Why does plastic stick to your hand?
It's because of Static electricity Human skin is easily positively charged. Plastic wrap is an insulator which means it does not allow electrons to flow from one to the other. Plastic wrap is negatively charged and human skin is positively charged and opposite charges attract. They are forever attracted to each other because human can earth electrons (which means making materials all neutral, equal number of protons and electrons) if the electrons are transffered from a conductor (which allows electrons to move freely from one to the other). e.g aluminium foil. Aluminium foil is a conductor which allows electrons to move freely from one to the other and electrons are transferred to positively charged hands and human earths it, so human is neutral overall and the aluminium foil is positively charged overall. e.g) plastic wrap is an insualtor which does not allow electrons to move freely from one to the other. and electrons are attracted to positively charged hands so therefore, they cling. And because it's an insulator, it will never ever let electrons transfer to human hands! So they will forever repeat :) Hope this helps. Cheers
How can aluminum foil float in water?
A thin aluminum foil can float on water if placed carefully flat on the surface because of the surface tension of water. If you were to submerge it, the foil will sink.
Will a magnet attract aluminium foil?
No, aluminum is a non ferrous. Only ferrous metals can be attracted to a magnet.
What is the relationship between a hero and his comic foil?
Charged with sexual tension.
Can you put aluminum foil in a microwave that has a metal rack?
No. The wire rack does not have enough surface area to cause a problem.. The foil is a solid surface and will reflect the microwaves.
How did Rutherford know that nucleus was positively charged?
the nucleus is positively charged because it bounces right off of the gold foil
What did Rutherford gold foil experiment suggest about the structure of an atom?
1) Atoms were mostly empty space (because most alpha particles went straight through the gold foil) 2) Atoms had a dense nucleus (because few alpha particles bounced straight back from the atoms) 3) The nucleus of atoms were positively charged (some alpha particles were deflected at large angles)
What experiment convinced Ernest Rutherford that the atom has a small positivity charged nucleus?
th gold foil experiment
