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Science Crime Busters

Science Crime Busters. Cloudy/odor. Bubbles. FLOW CHART. NaCl, NaHCO 3 , CaSO 4 , CaCO 3 , NaC 2 H 3 O 2 , sugar, sand, Vitamin C (ascorbic acid), cornstarch, flour, yeast, gelatin, Alka Seltzer. Water. Swells. Insoluble. Soluble. . . . Go On. Go On. Gelatin. Alka Seltzer. Yeast.

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Science Crime Busters

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  1. Science Crime Busters

  2. Cloudy/odor Bubbles FLOW CHART NaCl, NaHCO3, CaSO4, CaCO3, NaC2H3O2, sugar, sand, Vitamin C (ascorbic acid), cornstarch, flour, yeast, gelatin, Alka Seltzer Water Swells Insoluble Soluble    Go On Go On Gelatin Alka Seltzer Yeast

  3. Gelatin Go Back

  4. Go Back Alka Seltzer

  5. Yeast Go Back

  6. Insoluble KI3 Deep Blue Nothing Brown/Tan/ Yellowish  Observe Color Before Adding KI3, or Observe Mixture Dissolution Add Vinegar (Acid) Off White Pure White Bubbles No Bubbles Flour Plaster of Paris Corn Starch Limestone  

  7. Sand Go On

  8. Go On

  9. Go Back

  10. Flour Cornstarch Go On

  11. Flour Cornstarch Go Back

  12. No Bubbles Bubbles CaSO4 CaCO3 Go Back

  13. Soluble/ Clear Solution pH paper Acid Base Neutral  Add Vinegar (acid) Observe Crystals Vitamin C Bubbles No Bubbles Hexagonal Cubic Sodium Acetate Sugar Salt Bicarbonate of soda  

  14. Vitamin C Go On

  15. Go On

  16. Go Back

  17. Sodium Acetate Sodium Bicarbonate Go Back

  18. Sugar Go On

  19. Sodium Chloride Go On

  20. Metals Appearance Silvery Gray or Black Silvery or Gray Silvery or Gray Yellow-orange  Cu Magnet None None None Attraction  HCl Fe bubbles none none Use density test or tin more malleable than aluminum  Zn

  21. Jack Cairns Director Delaware Science Resource Center Co-Director Science Olympiad jcairnsc@aol.com

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