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5 Written questions

5 Matching questions

  1. antioxidants
  2. dalton (atomic mass unit)
  3. electrons (e⁻)
  4. atoms
  5. atomic mass (atomic weight)
  1. a The average mass of all of an atom's naturally occurring isotopes.
  2. b The standardized unit of measurement for the mass of atoms and their subatomic particles.
  3. c The smallest units of matter that retain the properties and characteristics of the elements.
  4. d Negatively charged particles located in a cloud, moving about the nucleus of an atom.
  5. e Substances that inactivate oxygen-derived free radicals.

5 Multiple choice questions

  1. The dozens of particles that compose atoms, namely protons, neutrons, and electrons.
  2. Uncharged (neutral) particles located within the nucleus of an atom.
  3. The dense central core of an atom where protons and neutrons are located.
  4. The process of giving up or gaining electrons.
  5. The building blocks of all forms of matter -- both living and nonliving; cannot be split into a simpler substance by ordinary chemical means.

5 True/False questions

  1. chemical symbolThe building blocks of all forms of matter -- both living and nonliving; cannot be split into a simpler substance by ordinary chemical means.

          

  2. free radicalThe process of giving up or gaining electrons.

          

  3. molecular formulaTwo or more atoms sharing electrons.

          

  4. moleculeA substance that contains atoms of two or more different elements.

          

  5. compoundA substance that contains atoms of two or more different elements.

          

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