Essay about Lab Observations of Chemical Changes

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Observations of Chemical Changes Purpose: The purpose of this experiment is to observe chemical changes in common consumer products to determine if the chemicals are basic, acidic, or remain neutral when mixed with other chemicals. Procedure: In this experiment, various chemicals were mixed together, to determine a reaction. Using two drops from chemical 1 and two drops of chemical two, unless otherwise stated, then recording the type of physical reaction or color changes that occurred. Well#/questions Chemicals Reactions A NaHCO 3 and HCI - C0 2 When combined Sodium Bicarbonate and Hydrochloric Acid, Carbon Dioxide is produced. The two chemicals do not undergo a change in color but a chemical change when CO2 is produced.…show more content…
Meaning the combination produces a base. Questions: 1.) Suppose a household product label says it contains NaHCO3. How would you test this material for the presence of sodium bicarbonate? a. Add hydrochloric acid to the household product, and if the chemicals began to bubble, once mixed together, then this would indicate that sodium bicarbonate is present. 2.) You know what color phenolphthalein and BTB turn when testing an acid or a base. Use three household cleaning products with BTB. Name the items tested and their results: a. Windex: when combined with BTB this cleaner changed orange, indicating that the cleaner has an acidic ph. b. Fabuloso: When combined with BTB this cleanser changed to light blue, indicating that this cleaner is basic. c. Bleach: when combined with BTB this cleaner changed orange, indicating that the cleaner has an acidic ph. 3.) You find 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 assumptions can you make about this sample? a. Vinegar is a common household product, when mixed with the indicator, phenolphthalein, it turns pink. This indicates that Vinegar is acidic. 4.) You want to investigate a new wave of vitamin water is pH neutral. Results are: Three of the five samples turn a murky
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