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Physical Science Study Guide Answers

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Answers to Physical Science Study Guide

  1. The nucleus has a positive charge
  2. Atoms are made of even smaller particles
  3. Proton, neutron, electron
  4. The masses and distribution of the elements isotopes
  5. 14
  6. 35 protons, 46 neutrons, and 35 electrons
  7. Two
  8. Metal cations and shared electrons that surround them
  9. One-twelfth (1/12)
  10. Increasing atomic mass, with similar elements grouped in columns
  11. Elements that filled blank spaces in the table
  12. Answers will vary:
    1. Halogens – F, Cl, Br, I, At
    2. Noble gases – He, Ne, Ar, Kr, Xe, Rn
    3. Alkali metals – Li, Na, K, Rb, Cs, Fr
    4. Carbon family – C, Si, Ge, Sn, Pb
    5. Ionic compound
    6. Become less metallic
    7. +1
    8. The reactivity of barium is greater because reactivity of group 2A metals increases from top to bottom of the column
    9. Ionic because there is electron transfer
    10. Metalloid
    11. Types and amounts of elements in the alloy
    12. Bronze is harder than copper
    13. Less
    14. Ca2+ and Br
    15. Covalent
    16. Given
    17. 2
    18. They become more stable
    19. Electrons are not shared equally between atoms
    20. Aluminum sulfide
    21. Iron(III) hydroxide
    22. Iron and carbon

 

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Written by Ashley Erin

May 15, 2013 at 1:29 pm

Posted in Uncategorized

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