Be a Detective! Is it a Physical or a Chemical Change? (page 2)

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Author: Dr. Muriel Gerhard

                                                       Chart of Observations 

Chemicals Used Before Mixing: Properties After Mixing: Properties
Calcium chloride    
Baking Powder (not soda)    
Solution of Phenol Red    


Terms/Concepts: Matter, solids, liquids, gases, plasma, mass, volume, atomic particles, Boyle’s Law, Charles’ Law, physical change, chemical change, reversible, hand warmers.


VanCleave, Janice, Chemistry For Every Kid, John Wiley & Sons Inc., New York, N.Y. 1989, pp91 -119

Hone, E , Joseph, A, Victor, Brandwein, P, A Sourcebook for Elementary Science, Harcourt, Brace & World, Inc. New York/Burlingame, 1962


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