Observation of Chemical changes
Observations of Chemical Changes
Experiment 1
Chemistry 111
September 3,2014
Ashley Mattox
Abstract: The purposes of this lab is to observe the reactions of some common chemicals contained in consumer products and observe the macroscopic changes these chemicals undergo.
Purpose: The purpose of the lab is to be able to interpret underlying macroscopic changes in terms of the behavior of atoms and molecules and also to learn how to separate mixtures into their component substances by solubility.
Procedures/Materials Needed:
1 Toothpicks
1 Sheet of white and dark paper
1 Paper towel
1 Distilled water
1 Small amounts of household cleaning products
1 Goggle-safety
1 Well-Plate-24
1 Well-Plate-96
1 Pipet, Empty Short Stem
1 Aqueous Ammonia, 1M -1mL
1 Bromthymol Blue, 0.04% - 2 mL in Pipet
1 Copper (II) Sulfate, 0.2 M – 2 mL in Pipet
1 FDC Blue Dye #-1.0.1% - 2 mL in Pipet
1 Hydrochloric Acid, 1.0M-1 mL
1 Lead (II) Nitrate, 0.2 M- 2 mL in Pipet
1 PhenolphthaleinSolution1%1mL
1 Potassium Iodide, 0.1 M-2 mL in Pipet
1 Silver Nitrate, 0.1 N – 2 mL in white Dropper Bottle
1 Sodium Bicarbonate, 1 M – 2 mL in Pipet
1 Sodium Hydroxide, 1 M – 1 mL
1 Sodium Hypochlorite, 1% - 2 mL in Pipet
1 Starch Solution, 1% Stabilized - 2 mL in Pipet
1. For the following combinations of chemicals and using a different well of the 96-well plate for each combination, place 2 pipet drops of the first in one well and add 2 drops of the second chemical. Next observe the mixtures against the white and dark backgrounds by slipping white and black paper underneath the well plate. For each reaction record the well number of the mixture and your observations.
a. Sodium Bicarbonate and Hydrochloric Acid
b. Hydrochloric Acid and Bromothymol Blue
c. Ammonia and Bromothymol Blue
d. Hydrochloric Acid and Blue Dye
e. Blue Dye and Sodium Hypochlorite
f. Potassium Iodide and Lead Nitrate
g. Sodium Hydroxide and Phenolphthalein
h.
Experiment 1
Chemistry 111
September 3,2014
Ashley Mattox
Abstract: The purposes of this lab is to observe the reactions of some common chemicals contained in consumer products and observe the macroscopic changes these chemicals undergo.
Purpose: The purpose of the lab is to be able to interpret underlying macroscopic changes in terms of the behavior of atoms and molecules and also to learn how to separate mixtures into their component substances by solubility.
Procedures/Materials Needed:
1 Toothpicks
1 Sheet of white and dark paper
1 Paper towel
1 Distilled water
1 Small amounts of household cleaning products
1 Goggle-safety
1 Well-Plate-24
1 Well-Plate-96
1 Pipet, Empty Short Stem
1 Aqueous Ammonia, 1M -1mL
1 Bromthymol Blue, 0.04% - 2 mL in Pipet
1 Copper (II) Sulfate, 0.2 M – 2 mL in Pipet
1 FDC Blue Dye #-1.0.1% - 2 mL in Pipet
1 Hydrochloric Acid, 1.0M-1 mL
1 Lead (II) Nitrate, 0.2 M- 2 mL in Pipet
1 PhenolphthaleinSolution1%1mL
1 Potassium Iodide, 0.1 M-2 mL in Pipet
1 Silver Nitrate, 0.1 N – 2 mL in white Dropper Bottle
1 Sodium Bicarbonate, 1 M – 2 mL in Pipet
1 Sodium Hydroxide, 1 M – 1 mL
1 Sodium Hypochlorite, 1% - 2 mL in Pipet
1 Starch Solution, 1% Stabilized - 2 mL in Pipet
1. For the following combinations of chemicals and using a different well of the 96-well plate for each combination, place 2 pipet drops of the first in one well and add 2 drops of the second chemical. Next observe the mixtures against the white and dark backgrounds by slipping white and black paper underneath the well plate. For each reaction record the well number of the mixture and your observations.
a. Sodium Bicarbonate and Hydrochloric Acid
b. Hydrochloric Acid and Bromothymol Blue
c. Ammonia and Bromothymol Blue
d. Hydrochloric Acid and Blue Dye
e. Blue Dye and Sodium Hypochlorite
f. Potassium Iodide and Lead Nitrate
g. Sodium Hydroxide and Phenolphthalein
h.