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Origin of the Elements

  1. matter is made of extremely tiny particles called:
    atoms
  2. atoms are made of 3 subatomic particles:
    protons, neutrons, & electrons
  3. all of the elements on the periodic table occurs throughout:
    the universe
  4. the most & second most abundant elements
    • -hydrogen
    • -helium
  5. How old is the universe?
    14-15 billion yrs. old
  6. What is singularity?
    the scientific explanation of how the universe began

    -a point that is infinitely hot (a lot of energy) & infinitely small
  7. "Big Bang Theory"
    describes that singularity expanded and created the universe as it went
  8. What was the first element formed?
    Hydrogen (has only 1 proton)
  9. What were the hyrogen atoms attracted to each other by?
    gravity
  10. What formed the first stars?
    Large masses of Hydrogen
  11. Because the center of the stars were so hot:
    the hydrogen (1 proton) fused together to form helium (2 protons)
  12. All of the elements were formed during:
    the life and death of the stars
  13. What generation star is Earth?
    3rd generation
  14. Planets like Earth have all the necesssary elements for:
    life
  15. protons are:
    very dense & very small

    -postively charged
  16. electrons are:
    very light & weigh 1/2000th of a proton

    -has a negatively charged
  17. Proton Weight =
    Neutron Weight
  18. "Electromagnetic Force"
    + & - attractive force
  19. Rutherford discovered:
    the Nucleus
  20. JJ Thomson discovered:
    protons and electrons
  21. Chadwick discovered:
    the neutron
  22. atom
    • neutral
    • # of electons = # of protons
  23. ion
    • gained or lost electrons
    • # of protons does NOT = # of electrons
  24. *Isotope
    atoms of an element (all have same # of protons) vary in # of neutrons
  25. C-12
    • isotope with 6 protons & 6 neutrons
    • -12 in nucleus
  26. C-13:
    C-14
    • 6P & 7N = C-13
    • 6P & 8N = C-14
  27. mass number:
    (the 12 in C-12)
    #P = #N
  28. atomic #:
    # P
  29. avg atomic mass:

    (C-12,13,14)
    12.011 (bottom of PT block)
  30. mass atom
    P & N
  31. mass # does NOT =
    avg. atomic mass
  32. unit of mass
    amu = atomic mass unit
  33. atomic number =
    #P = #N = #e-

    (if you don't know isotope)
Author
seniorcompany18
ID
100871
Card Set
Origin of the Elements
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Origin of the Elements
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