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Quick Assessment: Understanding Atoms and their Parts
1. Which of the following are parts of an atom?
a. Proton
b. Neutron
c. Electron
d. Boron
2. The parts of the atom are called ____ particles
a. Hypoatomic
b. Subatomic
c. Past
d. Elemental
3. How does the mass of an electron compare with the mass of the proton and neutron?
a. Much smaller
b. About the same
c. Much larger
d. Scientists don’t compare their sizes.
4. Which of the following correctly lists the particles in a helium atom?
a. 1 proton, 1 neutron, 1 electron
b. 1 proton, 2 neutrons, 2 electrons
c. 2 protons, 2 neutrons, 2 electrons
d. 2 protons, 2 neutrons, 4 electrons
5. What is the total number of electrons in an atom with an atomic number of 13 and a mass
number of 25?
a. 12
b. 13
c. 25
d. 38
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6. If the dartboard above is used to model an atom, which dart indicates where the protons
and neutrons are located?
a. Dart W
b. Dart X
c. Dart Y
d. Dart Z
7. Which of these represents a neutron?
a. W
b. X
c. Y
d. Z
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Quick Assessment: Understanding Atoms and their Parts
8. Which of the following best represents a carbon atom?
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9. The table above shows the number of protons in an atom of four different elements.
According to the periodic table, which of these elements is a metal?
a. T
b. Q
c. X
d. Z
10. If an atom has an atomic mass of 101 and an atomic number of 44, how many neutrons
would it have?
a. 44
b. 57
c. 101
d. 145
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