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5 Written questions

5 Matching questions

  1. What is the most important source of energy in the sun?
  2. What happens to the heavy elements that a supernove creates?
  3. Dmitri Mendeleev discovered a set of __________ applied to all the elements.
  4. In the sun when isotopes of hydrogen fuse they make nuclei of ______
  5. The hydrogen is at high pressure and extremely high temperatures and it's state of matter is _______
  1. a plasma
  2. b patterns
  3. c When hydrogen fuses to form helium nuclei and energy is produced
  4. d helium
  5. e they are blown of into space as the star burns out

5 Multiple choice questions

  1. periods
  2. supernova
  3. Henry Moseley in 1913
  4. (1) new elements have been added as they were discovered (2) arranged in order of atomic number , NOT atomic mass
  5. a state of matter that is gas-like and is made of free electrons and nuclei of atoms without electrons

5 True/False questions

  1. The properties of an element can be predicted from its location in the __________ _______properties

          

  2. What is nuclear fusion?a state of matter that is gas-like and is made of free electrons and nuclei of atoms without electrons

          

  3. WHere do the elements come from?when smaller nuclei combine and form larger nuclei - in stars

          

  4. Helium builds up in the sun's core and one or two helium nuclei fuse and form _________beryllium

          

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

          

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