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5 Written questions

5 Matching questions

  1. noble gas
  2. polyatomic ion
  3. period
  4. scientific theory
  5. atomic number
  1. a ions made of more than 1 atom
  2. b Do not react easily with other elements
  3. c a well tested idea that explains a wide range of observations
  4. d the number of protons in the nucleus of an atom
  5. e horizontal row on the periodic table

5 Multiple choice questions

  1. formed when atoms share electrons
  2. alkaline earth metal
  3. building blocks of matter
  4. atom that has lost or gained electrons
  5. made of two or more elements that are chemically combined

5 True/False questions

  1. alkali metalhave one valence electron


  2. mixtureatom that has lost or gained electrons


  3. atomatom that has lost or gained electrons


  4. chemical bondforce of attraction that holds atoms together


  5. ionic bondresults from the attraction of positive and negative ions