Observations of Chemical Changes
Laboratory ReportTitle: Observations of Chemical ChangesDate: 9/9/13Name:
Purpose:
The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. In addition, the student should also gain a betterunderstanding of the household chemicals that they use in their day to day lives.Procedure:Observe the chemical changes that occur by mixing a list of chemicals (provided in the lab manual).Add 2 drops of the first chemical into a well in the 96 well plate and then add the second chemical.Observe the mixture against white and dark backgrounds by sliding white and black paper under thewell plate.Record reactions.Observations:This experiment allowed me to observe the chemical reactions that occur between a variety ofchemicals and some indicators.The following observations were made: NaHCO3 and HCI – CO2 HCI and BTB NH3 and BTB HCI and blue dye Blue dye and NaOCI NaOCI and KI KI and Pb(NO3)2 NaOH and phenolphthalein HCI and phenolphthalein NaOH and AgNO3 AgNO3 and NH3 NH3 and CuSO4
Data Tables:
Data Table 1: ReactionsReaction
Question/WellNumberA/H12
Chemicals
NaHCO3 and HCI - CO2 When I added the hydrochloric acid to the sodium
bicarbonate it began to bubble and fizz almostimmediately. This solution continued to bubble forseveral minutes. There was no color change and I didnot detect any noticeable odors.When I added the BTB to the hydrochloric acid itturned a yellow-orange color. It did not fizz or bubbleand had no detectable odor.When I added the BTB to the NH3 the solution turnedblue immediately. There was no fizzing or otherobservable changes.When I added the blue dye to the hydrochloric acid thesolution seemed to turn a blue green color. It did notbubble or have an odor.Blue dye and NaOCI When I added the sodium hypochlorite to the blue dyethe didn't seem to be a chemical reaction. I did notobserve color change, fizzing or smells.No observable
Purpose:
The purpose of this experiment is for the student to gain knowledge and experience regarding how avariety of chemicals react to one another. In addition, the student should also gain a betterunderstanding of the household chemicals that they use in their day to day lives.Procedure:Observe the chemical changes that occur by mixing a list of chemicals (provided in the lab manual).Add 2 drops of the first chemical into a well in the 96 well plate and then add the second chemical.Observe the mixture against white and dark backgrounds by sliding white and black paper under thewell plate.Record reactions.Observations:This experiment allowed me to observe the chemical reactions that occur between a variety ofchemicals and some indicators.The following observations were made: NaHCO3 and HCI – CO2 HCI and BTB NH3 and BTB HCI and blue dye Blue dye and NaOCI NaOCI and KI KI and Pb(NO3)2 NaOH and phenolphthalein HCI and phenolphthalein NaOH and AgNO3 AgNO3 and NH3 NH3 and CuSO4
Data Tables:
Data Table 1: ReactionsReaction
Question/WellNumberA/H12
Chemicals
NaHCO3 and HCI - CO2 When I added the hydrochloric acid to the sodium
bicarbonate it began to bubble and fizz almostimmediately. This solution continued to bubble forseveral minutes. There was no color change and I didnot detect any noticeable odors.When I added the BTB to the hydrochloric acid itturned a yellow-orange color. It did not fizz or bubbleand had no detectable odor.When I added the BTB to the NH3 the solution turnedblue immediately. There was no fizzing or otherobservable changes.When I added the blue dye to the hydrochloric acid thesolution seemed to turn a blue green color. It did notbubble or have an odor.Blue dye and NaOCI When I added the sodium hypochlorite to the blue dyethe didn't seem to be a chemical reaction. I did notobserve color change, fizzing or smells.No observable