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5 Written questions

5 Matching questions

  1. dalton (atomic mass unit)
  2. major elements
  3. compound
  4. chemical symbol
  5. ion
  1. a One or two letters of an element's name in English, Latin, or another language (ex. H for Hydrogen, Ne for Neon, or K for Potassium).
  2. b An atom that has a positive or negative charge because it has unequal numbers of protons and electrons.
  3. c The standardized unit of measurement for the mass of atoms and their subatomic particles.
  4. d A substance that contains atoms of two or more different elements.
  5. e Carbon, Hydrogen, Oxygen, and Nitrogen; they alone make up about 96% of the body's mass.

5 Multiple choice questions

  1. Indicates the elements and the number of atoms of each element that make up a molecule.
  2. Uncharged (neutral) particles located within the nucleus of an atom.
  3. The elements that make up the last .4% of the mass of the body.
  4. The process of giving up or gaining electrons.
  5. The four major elements in the human body.

5 True/False questions

  1. isotopesAtoms of an element that have different numbers of neutrons and therefore different mass numbers; most of them are stable and do not change over time.

          

  2. atomsThe smallest units of matter that retain the properties and characteristics of the elements.

          

  3. moleculeTwo or more atoms sharing electrons.

          

  4. electron shellsNegatively charged particles located in a cloud, moving about the nucleus of an atom.

          

  5. radioactive isotopes (radioisotopes)The standardized unit of measurement for the mass of atoms and their subatomic particles.

          

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