Gold Foil Experiment Flashcards
In Rutherford’s experiment, when _____ particles strike the zinc sulfide screen, they produce flashes of light or scintillations which can be detected.
a
Gamma
b
Alpha
c
Beta
d
Meson
Alpha
In Rutherford’s experiment, which of the following proved that the nucleus of an atom has a positive charge?
a
The nucleus was found to have protons
b
The alpha particles were found to be attracted to the nucleus
c
The alpha particles, being positively charged, were deflected by the nucleus
d
All of the above
The alpha particles, being positively charged, were deflected by the nucleus
From his results, Rutherford concluded that the positive charge of an atom is
a
less than the negative charge of the atom.
b
spread evenly throughout the atom.
c
concentrated in a tiny area at the center of the atom.
d
two of the above
concentrated in a tiny area at the center of the atom.
Who performed the gold foil experiment to measure the approximate size of the nucleus?
Ernest Rutherford
Which of the following were observed in Rutherford’s experiment?
Most of the alpha particles passed straight through the atom
A few of the alpha particles got deflected by small angles
In Rutherford’s’ experiments, most of the alpha particles
passed straight through the gold foil.
The Rutherford paper suggested that the central charge of an atom might be proportional to its mass number in hydrogen mass units
False
The positive charge and the mass was concentrated in a very large space inside the atom.
False
An alpha particle has mass nearly four times that of a proton.
True
In Rutherford’s experiment, in order to detect the alpha particles after scattering, a movable circular screen coated with zinc sulfide is placed around the _____ foil.
gold
A dense nucleus of protons surrounded by a cloud of electrons is Rutherford’s nuclear model.
True
Rutherford’s experiments on atoms were done on foil made of which of the following elements?
Gold
