Download Atom Unit Review Questions File

1. In the Rutherford gold foil experiment,
the fact that most of the alpha particles
were NOT deflected as they passed
through the gold foil indicates that:
a) the nucleus is positively charged.
b) the atom is mostly empty space.
c) atoms are solid spheres touching
each other in the solid state.
d) gold is very dense.
1. In the Rutherford gold foil experiment,
the fact that most of the alpha particles
were NOT deflected as they passed
through the gold foil indicates that:
a) the nucleus is positively charged.
b) the atom is mostly empty space.
c) atoms are solid spheres touching
each other in the solid state.
d) gold is very dense.
2. Which two subatomic particles have
approximately the same mass?
a) protons and neutrons
b) protons and electrons
c) electrons and nuclei
d) neutrons and electrons
e) protons and alpha particles
2. Which two subatomic particles have
approximately the same mass?
a) protons and neutrons
b) protons and electrons
c) electrons and nuclei
d) neutrons and electrons
e) protons and alpha particles
3. The number of electrons in a neutral
atom of an element is always equal to
the _______ of the element.
a) mass number
b) atomic number
c) atomic mass unit
d) isotope number
e) density
3. The number of electrons in a neutral
atom of an element is always equal to
the _______ of the element.
a) mass number
b) atomic number
c) atomic mass unit
d) isotope number
e) density
4. The difference between the mass
number of an atom and the atomic
number of the atom is always equal to
__________.
a) the charge of the ion.
b) the atomic number of the element.
c) the atomic mass unit.
d) the number of protons in the nucleus.
e) the number of neutrons in the
nucleus.
4. The difference between the mass
number of an atom and the atomic
number of the atom is always equal to
__________.
a) the charge of the ion.
b) the atomic number of the element.
c) the atomic mass unit.
d) the number of protons in the nucleus.
e) the number of neutrons in the
nucleus.
5. Isotopes are atoms of the same
element that:
a) have different numbers of electrons.
b) have different numbers of protons.
c) have different atomic numbers.
d) have different numbers of neutrons.
e) have different nuclear charges.
5. Isotopes are atoms of the same
element that:
a) have different numbers of electrons.
b) have different numbers of protons.
c) have different atomic numbers.
d) have different numbers of neutrons.
e) have different nuclear charges.
6. Particles with large mass will bend
___ than particles with small mass
when passing between charged plates:
a) more
b) less
c) the same
6. Particles with large mass will bend
___ than particles with small mass
when passing between charged plates:
a) more
b) less
c) the same
7. Who is associated with the plum
pudding model of atoms:
a) Rutherford
b) Thomson
c) Dalton
7. Who is associated with the plum
pudding model of atoms:
a) Rutherford
b) Thomson
c) Dalton
8. Which of the following scientists is
not matched with the correct
experiment?
a) Rutherford, Gold Foil (or alpha scatter)
b) Thomson, Cathode Ray Tubes
c) Millikan, Oil Drop
d) Becquerel, Separation of Radioactivity
8. Which of the following scientists is
not matched with the correct
experiment?
a) Rutherford, Gold Foil (or alpha scatter)
b) Thomson, Cathode Ray Tubes
c) Millikan, Oil Drop
d) Becquerel, Separation of Radioactivity