Station #1: Lead Nitrate and Potassium Iodide solutions. Shower of yellow INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #2: Potassium Chlorate and Gummy bear. Gummy
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #3: Elephant toothpaste. Elephant toothpaste
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #4: Copper and Nitric Acid. Cu + Nitric acid
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #5: Carbon Disulfide and Nitrogen Oxide. Copper Disulfide and Nitrogen Oxide
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #6: Chemiluminescence. Chemiluminescence
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #7: Color changing milk. Milk
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #8: Silver nitrate and Hydrochloric acid. Silver Nitrate and HCl
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #9: Ammonium Thiocyanate and Barium Hydroxide Octahydrate. Watch this!
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #10: Salt Crystal Garden. Salt crystals
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #11: Combustion of iron in pure oxygen. Combustion
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #12: Genie in a bottle. Genie
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #13: Halloween clock reaction. orange and black
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #14: Fun with Sodium Acetate. Sodium Acetate
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Station #15: Cold but Sublime. Cold
INITIAL APPEARANCE:
OBSERVATIONS:
TYPE OF CHANGE:
CLUE:
Additional Responses

1. Do any of the procedures give a clue that a chemical change occurred, but are not chemical changes? Which ones?

2. Develop a definition of chemical change using atoms and molecules in your definition. Use complete, grammatically correct sentences.