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5 Written questions

5 Matching questions

  1. molecules
  2. oxidation-reduction reaction
  3. atomic number
  4. energy level
  5. Kinetic energy
  1. a A region surrounding an atomic nucleus that contains electrons moving at approximately the same speed and having approximately the same amount of kinetic energy
  2. b The smallest particles of a chemical compound; the smallest naturally occurring parts of an element or a compound
  3. c The number of protons in an atom
  4. d energy of motion
  5. e An electron-transport reaction in which the molecules losing electrons become oxidized and those gaining electrons become reduced

5 Multiple choice questions

  1. A measure of molecular energy of motion
  2. The central region of an atom
  3. Weak attractive forces between molecules; important in determining how groups of molecules are arranged
  4. Materials that will be changed in a chemical reaction
  5. The weight of an atomic nucleus, expressed in atomic mass units (the sum of the protons and neutrons)

5 True/False questions

  1. productsNew molecules resulting from a chemical reaction

          

  2. saltscompounds that release hydroxide ions or accept hydrogen ions in a solution

          

  3. soluteThe phase of matter in which the molecules are packed tightly together; they vibrate in place

          

  4. gasThe phase of matter in which the molecules are more energetic than the molecules of a liquid, resulting in only a slight attraction for each other

          

  5. acidsThe phase of matter in which the molecules are more energetic than the molecules of a liquid, resulting in only a slight attraction for each other

          

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