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5 Written questions

5 Matching questions

  1. What are the two differences between Mendeleev's table and the modern periodic table?
  2. What do we call it when a star explodes?
  3. The hydrogen is at high pressure and extremely high temperatures and it's state of matter is _______
  4. Who discovered a way to measure the positive charge ( the atomic number) on an atom's nucleus?
  5. From left to right, the properties of elements in a period change in a _________
  1. a pattern
  2. b Henry Moseley in 1913
  3. c plasma
  4. d (1) new elements have been added as they were discovered (2) arranged in order of atomic number , NOT atomic mass
  5. e a supernova

5 Multiple choice questions

  1. properties
  2. Mendeleev, 63
  3. in order of increasing atomic mass
  4. periods
  5. patterns

5 True/False questions

  1. The verticals columns are called _________groups

          

  2. Fusion keeps going until the core of the star is almost all _________periods

          

  3. What is plasma?the average mass of all the isotopes of an element

          

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

          

  5. What happens to the heavy elements that a supernove creates?they are blown of into space as the star burns out