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5 Written questions

5 Matching questions

  1. The verticals columns are called _________
  2. THe elements in the same group have ________ characteristics
  3. What is plasma?
  4. When these nuclei in the plasma collide they join together and form larger nuclei and release huge amounts of ___________
  5. Helium builds up in the sun's core and one or two helium nuclei fuse and form _________
  1. a groups
  2. b energy
  3. c beryllium
  4. d similar
  5. e a state of matter that is gas-like and is made of free electrons and nuclei of atoms without electrons

5 Multiple choice questions

  1. pattern
  2. patterns
  3. When hydrogen fuses to form helium nuclei and energy is produced
  4. a supernova
  5. (1)atomic number (number of protons), (2) chemical symbol (3) name (4) atomic mass

5 True/False questions

  1. WHen a helium nucleus fuses with a beryllium nucleus what is formed?carbon


  2. Who discovered a way to measure the positive charge ( the atomic number) on an atom's nucleus?Henry Moseley in 1913


  3. A supernova provides enough energy to create the ________ ____________groups


  4. By 1869 how many elements had been discovered?63


  5. In 1869 _________ published the first periodic table with ______ elements and three missing elements?families