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- 1. Multiple Choice
The simplest unit of an element is a/an
proton
neutron
electron
atom
- 2. Multiple Choice
What is the term for the center of an atom consisting of protons and neutrons?
nucleus
matter
atom
nucleon
- 3. Multiple Choice
Which sub-atomic particle in the atom has no charge?
Proton
Neutron
ElectronNucleus - 4. Multiple Choice
What is the charge of an atom?
+1
0
-1
- 5. Multiple Choice
What is the charge of the nucleus in an atom?
Positive
Neutral
Negative
- 6. Multiple Choice
What is the relative mass of an electron?
1
+1
0
1/1840
- 7. Open Ended
An atom contains 20 protons. Which element is it?
- 8. Multiple Choice
Atomic mass is the sum of the number of
Protons and electrons
Protons and neutrons
Electrons and neutrons
Protons, electrons, and neutrons
- 9. Multiple Choice
What is the electronic configuration of a carbon atom?
2, 4
2, 8, 2
2, 10
12
- 10. Multiple Choice
Isotopes are atoms of the same element with the same number of __________ but different number of ___________.
protons, electrons
protons, neutrons
neutrons, protons
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