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WorksheetsParticle and Nuclear Physics
Total questions: 20
Worksheet time: 13mins
Who proposed that the atom is a hard solid sphere?
Rutherford
Democritus
Thomson
Dalton
What is the charge of an electron?
-1.6 x 10^-19 C
0 C
+1.6 x 10^-19 C
+9.11 x 10^-31 kg
Which scientist proposed the Plum Pudding model of the atom?
Rutherford
Dalton
Thomson
Democritus
What is the charge of a proton?
+1.6 x 10^-19 C
+9.11 x 10^-31 kg
0 C
-1.6 x 10^-19 C
Which experiment led to the discovery of the nucleus in an atom?
Rutherford experiment
Dalton experiment
Thomson experiment
Bohr experiment
What is the charge of a neutron?
+9.11 x 10^-31 kg
0 C
+1.6 x 10^-19 C
-1.6 x 10^-19 C
Which particle is deviated due to the repulsive force between the alpha particle and the positive charge in the atom?
Beta particle
Gamma particle
Alpha particle
Neutron
What quarks are protons made of?
U U D
D D U
U D C
S S C
What is the weak nuclear force responsible for?
Colour interaction
Electron repulsion
Mass attraction
Nuclear decay
The name of a particle with no internal structure
Atomic Particle
Base Particle
Elementary Particle
Smallest Particle
Atomic number, Z is ...
the number of protons in a nucleus.
the number of neutrons in a nucleus.
the number of nucleons in a nucleus.
Isotopes of a given element all have the same
charge / mass ratio.
neutron number.
nucleon number.
proton number.
A thin gold foil is bombarded with α-particles as shown.
The results of this experiment provide information about the
binding energy of a gold nucleus.
energy levels of electrons in gold atoms.
size of a gold nucleus.
structure of a gold nucleus.
Which statement about the alpha-particle scattering experiment provides evidence for the existence of the nucleus?
A tiny proportion of the alpha-particles are deflected through large angles.
Slower alpha-particles are deflected through larger angles.
The kinetic energies of the deflected alpha-particles are unchanged.
The number of alpha-particles deflected depends on the thickness of the foil.
Which statement describes β- decay in terms of a simple quark model?
A down quark changes to an up quark and emits an electron and an electron antineutrino.
A down quark changes to an up quark and emits a positron and an electron neutrino.
An up quark changes to a down quark and emits an electron and an electron antineutrino.
An up quark changes to a down quark and emits a positron and an electron neutrino.
Which equation represents β+ decay?
neutron → proton + positron + antineutrino
neutron → proton + positron + neutrino
proton → neutron + positron + antineutrino
proton → neutron + positron + neutrino
These are light, elementary particles that are not made up of quarks.
Gluons
Electrons
Leptons
Baryon
an electron with a positive charge
neutrino
gauge boson
positron
gluon
What is likely to happen to unstable nuclei with too many, or too few, neutrons?
They will decay by emitting radiation.
They will loose all their electrons.
They will bond with other atoms.
