Tuesday, April 16, 2013

Chemical And Phisical Changes

Chemical and Phisical Changes Title: Chemical and Physical Changes. Purpose: To square off the differences between chemical substance and physical transmits when they happen. Materials: Five test tubes, etna burner, crucible, test tube holder, triple beam balance, ring stand, triangle, vaporisation dish, wood splint, copper turnings, copper (II) nitrate, dilute nitric acid, Ba(NO3)2, Na2CrO4, FeCl3, KSCN, AgNO3, ammonium dichromate, safety goggles, and matches. Results: 1. Data table (see attached page) 2. Questions (1-3): 1. A chemical change usually foams, sparks, explodes or lets off gas, and it changes the substance into a compound.
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A physical change will change color, feed or evaporate but it will not change the substance . 2. A physical change that seems like a chemical change is when I poured the FeCl3, and KSCN together because they were both readable but together they turned red. 3. A chemical home is if a chemical or element has a reception with another chemical, ...If you want to get a full essay, gild it on our website: Ordercustompaper.com

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