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- 1. Multiple Choice
Thompson was the first to discover a subatomic particle - the electron. What are the others?
neutrons & positrons
protons & neutrons
positrons & quarks
protons & positrons
- 2. Multiple Choice
A positively charged particle found in the nucleus is called a
neutron.
proton.
electron.
positron.
- 3. Multiple Choice
Electrons can best be described as having a
large size, positive charge.
very small size, positive charge.
large size, negative charge.
very small size, negative charge.
- 4. Multiple Choice
Electrons are subatomic particles that exist
inside the nucleus.
in simultaneous dimensions.
in parallel universes.
outside the nucleus.
- 5. Multiple Choice
Neutrons (discovered by James Chadwick in 1932) are neutral subatomic particles that are located
in and outside the nucleus.
in the nucleus.
just outside the nucleus.
in alternate universes.
- 6. Multiple Choice
Neutrons have almost exactly the same mass as
electrons.
positrons.
protons.
quarks.
- 7. Multiple Choice
Only protons & neutrons can be distinguished by mass, charge and position in an atom.
True
False
- 8. Multiple Choice
James Dalton proved that the true nature of the atom could best be described as resembling "plum pudding."
True
False
- 9. Multiple Choice
Rutherford proved the existence of protons located in a very small nucleus by using a crude particle accelerator in 1911.
True
False
- 10. Multiple Choice
The atomic number (#) of an element is equal to the
weight of an electron.
# of neutrons in a single atom of that element.
weight of a neutron.
# of protons in a single atom of that element.
- 11. Multiple Choice
Atoms of different elements have
the same # of protons.
the same general properties.
a different # of protons.
the same # of electrons.
- 12. Multiple Choice
Because atoms are neutral, each positive charge is
the same as a neutral charge.
balanced by a negative charge.
the same as no charge.
balanced by a neutral charge.
- 13. Multiple Choice
Which statement best describes the mass number (#) of an atom?
the sum of electrons and neutrons in the nucleus
the sum of protons & neutrons in the nucleus
the difference in mass between protons & neutrons
the difference in mass between electrons and neutrons
- 14. Multiple Choice
Since atoms are balanced with equal #'s of positive & negative charges, the atomic # is also
the same as the # of electrons.
the # of neutrons in a single atom.
the same as the # of neutrons.
the # of electrons in a single atom.
- 15. Multiple Choice
If you know the atomic number (or # of protons) and mass number of an atom, you can find the
number of electrons by adding to the mass number.
number of neutrons by adding to the mass number.
number of neutrons by subtracting from the mass number.
total atomic weight of an atom.
- 16. Multiple Choice
If the atomic mass of an element is 32 and the atomic # is 16, then
the number of neutrons is also 16.
the element most likely has isotopes.
the number of electrons is also 16.
the number of protons is also 32.
- 17. Multiple Choice
Every neutral atom has the same number of protons and electrons, however
they may not have the same # of neutrons.
they cannot combine with other atoms.
they cannot form isotopes.
they may also have the same atomic mass.
- 18. Multiple ChoiceWhat is an ion?A Charged AtomA Large AtomA Small AtomA Cute Atom
- 19. Multiple ChoiceAn atom becomes _________ when it gains electrons.PositiveNegativeNeutralInvinsible
- 20. Multiple ChoiceAn atom becomes _______ when it loses electrons.PositiveNegativeNeutralInvinsible
- Answer choicesTagsAnswer choicesTags