Science Crime Busters

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

Gelatin Go Back

Go Back Alka Seltzer

Yeast Go Back

Observe Color Before Adding KI3, or Observe Mixture Dissolution 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  

Sand Go On

Go On

Go Back

Flour Cornstarch Go On

Flour Cornstarch Go Back

No Bubbles Bubbles CaSO4 CaCO3 Go Back

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

Vitamin C Go On

Go On

Go Back

Sodium Acetate Sodium Bicarbonate Go Back

Sugar Go On

Sodium Chloride Go On

   Metals Silvery Gray or Black Silvery or Gray Silvery or Gray 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

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