western
Physics and Astronomy

                                   
Elementary My Dear Watson
Introduction

To identify twelve (12) elements by observing their physical properties.

Procedure
  1. The competition consists of three rounds with a time limit of five minutes per round.
  2. In the first round, each team will be required to identify twelve (12) elements by observing their physical properties. Some of the samples may be in sealed containers. Each team will submit an element answer sheet at the 5 minute mark.
  3. The second round is similar to the first except that a written clue is provided for each element. One additional clue is provided in the third round.
  4. Each correct element selection in round one will score one point. For round two, each correct response gains two points. In round three, correct answers receive 3 points. There is no penalty for incorrect answers.
Rules
  1. Each team will receive the same elements.
  2. The same element may be present more than once.
  3. Element answer sheets will be submitted at the end of each round. The team may retain a copy of their answers.
  4. Teams may submit revised answers in succeeding rounds.
  5. The elements that could be used are:
    Mg, Ca, Cr, Mn, Fe, Co, Ni, Pt, Cu, Ag, Au, Zn, Hg, A1, C, Si, Sn, Pb, N , P, Sb, Bi, 0 , S, H, I, Ne, and Ar.
  6. The clues given will be based mainly on the properties and uses of the element. For example, if the element was copper, the first clue could be that it was a good conductor of electricity and the second that is was a coinage metal.
Source London District Science Olympics..

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