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- 1. Multiple ChoiceWhich two particles make up the nucleus of an atom?Protons and ElectronsProtons and NeutronsMolecules and CompoundsNeutrons and Electrons
- 2. Multiple ChoiceA particle that moves around the nucleus is a(n)...ProtonNeutronElectronQuark
- 3. 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
- 4. Multiple Choice
Rutherford concluded that the amount of positive charge varies
with the amount of electrons in the nucleus.
as the the amount of isotopes varies.
with the amount of neutrons in the nucleus.
with different elements.
- 5. Multiple Choice
A positively charged particle found in the nucleus is called a
neutron.
proton.
electron.
positron.
- 6. 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.
- 7. 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.
- 8. Multiple ChoiceWhat is the mass number?the number of protonsthe sum of the number of protons and the number of neutrons in the nucleus of an atomthe number of electronsthe number of neutrons
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