Physics and Astronomy

Water Analysis
Objective Each team will be given a sample of water prepared to meet specific characteristics which students must test and describe in as much detail as possible, e.g. acidity, hardness.
Purpose To improve knowledge of chemical analysis.
Participants: Teams of up to four..
Materials pH paper, distilled water, litmus paper, sample for analysis, microscope, slides, MnS04, filter paper, Na2S2O2, funnel, iodine, strains, Erlenmeyer flasks, soap, burettes, standard CaC03, starch indicator.
  1. Each team will get a different sample of water.
  2. Teams will be allowed a maximum of 90 minutes to complete all tests - then submit their analysis to the judges after this time period is over.
  3. Students may perform as many tests as they can in the time period allowed and any test that the judges feel to be pertinent, as well as safe, will be allowed.
  4. Points will be awarded on the basis of accuracy and thoroughness of the analysis as well as the manner in which the description is presented i.e. diagrams etc.
  5. Students must be prepared to redo a test if their original result seems questionable in the eyes of the judges.
Judging The winning team will have accumulated the most points and thus will have performed the best analysis.
Source Youth Science Foundation Science Olympics Manual.

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