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  • Science 8th Grade Online Quiz
  • The basic unit of a chemical element.
Multiple choice

The basic unit of a chemical element.

  1. Atom

  2. Proton

  3. Neutron

  4. Electron

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A Correct answer
Explanation

An atom is defined as the smallest unit of ordinary matter that forms a chemical element. Protons, neutrons, and electrons are subatomic particles that make up an atom.

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