chemical reactions lab results investigative science november 18 th, 2011
TRANSCRIPT
Chemical Reactions Chemical Reactions Lab ResultsLab Results
Investigative ScienceInvestigative Science
November 18November 18thth, 2011, 2011
Station 1Station 1
What you used:What you used:– Ammonia and Alum solutionAmmonia and Alum solution
What you should have seen:What you should have seen:– White, cloudy, gel precipitateWhite, cloudy, gel precipitate
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 2Station 2
What you used:What you used:– Powder Tide© and water (HPowder Tide© and water (H22O)O)
What you should have seen:What you should have seen:– Gives off heat, EXO-thermic reactionGives off heat, EXO-thermic reaction
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 3Station 3
What you used:What you used:– Epson solution and ammonium solutionEpson solution and ammonium solution
What you should have seen:What you should have seen:– Cloudy, white precipitateCloudy, white precipitate
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 4Station 4
What you used:What you used:– Epson salts (solid crystals) and HEpson salts (solid crystals) and H22OO
What you should have seen:What you should have seen:– Feels colder, ENDO-thermicFeels colder, ENDO-thermic
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 5Station 5
What you used:What you used:– Calcium chloride, baking soda, waterCalcium chloride, baking soda, water
What you should have seen:What you should have seen:– Creates a gas, releases heatCreates a gas, releases heat
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 6Station 6
What you used:What you used:– Vinegar and water (HVinegar and water (H22O)O)
What you should have seen:What you should have seen:– NothingNothing
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 7Station 7
What you used:What you used:– Ammonium and phenothlaleneAmmonium and phenothlalene
What you should have seen:What you should have seen:– Pink color changePink color change
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 8Station 8
What you used:What you used:– Yeast and hydrogen peroxide (HYeast and hydrogen peroxide (H22OO22))
What you should have seen:What you should have seen:– Feels warm when mixed, EXO-thermic Feels warm when mixed, EXO-thermic
reaction (energy is going INTO the reaction (energy is going INTO the system)system)
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 9Station 9
What you used:What you used:– Potassium iodide (KI) and copper (II) Potassium iodide (KI) and copper (II)
sulfate (CuSOsulfate (CuSO44))
What you should have seen:What you should have seen:– PrecipitatePrecipitate
Was this a chemical or physical Was this a chemical or physical reaction??reaction??
Station 10Station 10
What you used:What you used:– Potassium permanganate (KMnOPotassium permanganate (KMnO44) and ) and
glyceringlycerin What you should have seen:What you should have seen:
– Fire is created, gas is emittedFire is created, gas is emitted Was this a chemical or physical Was this a chemical or physical
reaction??reaction??