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Eighth Grade (Grade 8) Science Questions

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Grade 8 Atomic Structure
An atom with more electrons than protons would be considered a(n)
  1. metal atom.
  2. nonmetal atom.
  3. ion.
  4. atom of a metalloid.
Grade 8 Physics
Grade 8 Physics
1 atmosphere is equal to               .
  1. 760 mm of Hg
  2. 740 mm of Hg
  3. 720 mm of Hg
  4. 780 mm of Hg
Grade 8 DNA, RNA, and Genetics
Grade 8 Physics
Sodium chloride is an example of                      .
  1. Crystalline solids
  2. Non-crystalline solids
  3. Amorphous solids
  4. All of these
Grade 8 Physics
Which of the following is a polyatomic gas?
  1. Oxygen
  2. Chlorine
  3. Methane
  4. Argon
Grade 8 Physics
Grade 8 Physics
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