Chemical Changes Lab Report 
Name: Jayanti Magar
Title: Observations of Chemical Changes
Date: 02/11/015
Pre Lab Questions:
Use what you learned in this lab to answer the following questions.
A. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). How would you test this material for the presence of sodium bicarbonate? I would add hydrochloric acid (HCl) with carbon dioxide with NaHCO3, and it should bubble and form gas.
B. You know what color phenolphthalein and bromothymol blue turn when testing an acid or a base. Use the empty pipet in the Auxiliary Supplies Bag to test several (at least 3) household items including household cleaning products with bromothymol blue. Rinse the pipet well before using it on to the next household chemical. When finished with this experiment rinse the pipet well and return it to the Auxiliary Bag for use in future experiments. Name the items tested and record their results. What do these results mean? -Bleach+ Detergent= turns purple color -Glass Cleaner( Clear Image)+ bromothymol blue=bubbled and turned into dark blue color. -70% alcohol+ bromothymol blue=bubbled and turned into green color. From these results, we could conclude that class cleaner(Clear Image) is basic and 70% alcohol is neutral.
C. You found a sample of a solution that has a faint odor resembling vinegar. You are verifying that it is indeed vinegar and you add a few drops of phenolphthalein. The sample turns pink. What assumption can you make about this sample? I assume that the vinegar is an acid.
D. You decided to investigate if the new wave of Vitamin Water is neutral: neither too acidic not too basic. Using BTB (bromothymol blue), you select five flavors of Vitamin Water to test. Three of the flavor samples turn a murky green, indicating the likelihood of acid/ base balance. Of the two remaining, one turns slightly yellow, while one remains blue. What can you assume about the
Title: Observations of Chemical Changes
Date: 02/11/015
Pre Lab Questions:
Use what you learned in this lab to answer the following questions.
A. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). How would you test this material for the presence of sodium bicarbonate? I would add hydrochloric acid (HCl) with carbon dioxide with NaHCO3, and it should bubble and form gas.
B. You know what color phenolphthalein and bromothymol blue turn when testing an acid or a base. Use the empty pipet in the Auxiliary Supplies Bag to test several (at least 3) household items including household cleaning products with bromothymol blue. Rinse the pipet well before using it on to the next household chemical. When finished with this experiment rinse the pipet well and return it to the Auxiliary Bag for use in future experiments. Name the items tested and record their results. What do these results mean? -Bleach+ Detergent= turns purple color -Glass Cleaner( Clear Image)+ bromothymol blue=bubbled and turned into dark blue color. -70% alcohol+ bromothymol blue=bubbled and turned into green color. From these results, we could conclude that class cleaner(Clear Image) is basic and 70% alcohol is neutral.
C. You found a sample of a solution that has a faint odor resembling vinegar. You are verifying that it is indeed vinegar and you add a few drops of phenolphthalein. The sample turns pink. What assumption can you make about this sample? I assume that the vinegar is an acid.
D. You decided to investigate if the new wave of Vitamin Water is neutral: neither too acidic not too basic. Using BTB (bromothymol blue), you select five flavors of Vitamin Water to test. Three of the flavor samples turn a murky green, indicating the likelihood of acid/ base balance. Of the two remaining, one turns slightly yellow, while one remains blue. What can you assume about the