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Type: Multiple-Choice
Category: Atomic Structure
Level: Grade 8
Author: frankthecoolguy
Created: 10 years ago

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Atomic Structure Question

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Grade 8 Atomic Structure

Why does the proton determine the identity of an atom?
  1. The number of protons is also the atomic mass.
  2. The number of protons determines chemical properties, such as reactivity.
  3. The number of protons in an atom's nucleus determines an atom's atomic number.
  4. The number of protons decides an atom's name.