Tuesday, November 10, 2015

Year 9 - Chemistry - 10-11-15

Assignment
Chapter 3 Atomic Structure
  1.      Define:  Atomic mass unit, electron, electronic energy level (shells), electronic structure (configuration), electrostatic force of attraction, ions, isotopes, lattice, neutron, nucleon number (mss number), nucleus, proton, proton number (atomic number), and valency.
  2.      Qu. 1b, 2a and 2b, 4 and 5a on Page 58.
  3.      Expand IUPAC.
  4.      a.         Explain radioactivity and radioisotopes.
  b.         What are 235U and 60Co. What are they used for?



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