- 1. The outmost electrons of an atom are called the __________ electrons.
A) Outer
B) Valence
C) Happy
- 2. The identity of an atom is determined by the number of
A) Neutrons
B) Protons
C) Electrons
- 3. Where in the atom are protons and neutrons found?
A) Shells
B) Clouds
C) Nucleus
- 4. How many electrons does it take to fill the first shell?
A) Eight
B) Two
C) Ten
- 5. How many electrons does it take to fill the second shell?
A) Ten
B) Two
C) Eight
- 6. Elements with six valence electrons belong to which group?
A) Six
B) Two
C) Seventeen
- 7. Elements with only three shells are located in which period?
A) Eighteen
B) Potassium
C) Three
- 8. Rows (↔) are labeled as periods in the periodic table.
A) False
B) True
- 9. Columns (↕) are labeled as groups in the periodic table.
A) False
B) True
- 10. The Bohr Model uses what to describe atom configuration.
A) Shells
B) Dots
C) Electrons
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