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5 Written questions

5 Matching questions

  1. electrons (e⁻)
  2. chemical elements
  3. trace elements
  4. Carbon, Hydrogen, Oxygen, and Nitrogen
  5. atomic mass (atomic weight)
  1. a The building blocks of all forms of matter -- both living and nonliving; cannot be split into a simpler substance by ordinary chemical means.
  2. b Negatively charged particles located in a cloud, moving about the nucleus of an atom.
  3. c The four major elements in the human body.
  4. d The average mass of all of an atom's naturally occurring isotopes.
  5. e The elements that make up the last .4% of the mass of the body.

5 Multiple choice questions

  1. Radioisotopes used to follow movements of certain substances through the body.
  2. Calcium, Phosphorous, Potassium, Sulfur, Sodium, Chlorine, Magnesium, and Iron; make up about 3.6% of the body's mass.
  3. The number of protons in an atom.
  4. The science of the structure and interactions of matter.
  5. The smallest units of matter that retain the properties and characteristics of the elements.

5 True/False questions

  1. molecular formulaTwo or more atoms sharing electrons.

          

  2. major elementsThe elements that make up the last .4% of the mass of the body.

          

  3. ionThe smallest units of matter that retain the properties and characteristics of the elements.

          

  4. protons (p⁺)Uncharged (neutral) particles located within the nucleus of an atom.

          

  5. mass numberThe sum of an atom's protons and neutrons.