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Sodium Hydroxide Teacher Resources
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Middle school marine scientists compare the pH change in distilled and saltwater as acetic acid is added one drop at a time. Then they compare the pH change in both when sodium hydroxide is added. This experiment demonstrates the buffering ability of sea water. They apply the results to the waters around the Lost City hydrothermal vents.
In this thermometric titration learning exercise, students titrate hydrochloric acid with sodium hydroxide to determine the concentration of hydrochloric acid. They measure the change in temperature of the solution, plot their data and use the graph to find the concentration of hydrochloric acid.
In this qualitative analysis worksheet, students read about all the different tests that can be done in chemistry to give qualitative results. Tests include flame tests, forming precipitates with sodium hydroxide, using sodium hydroxide to produce ammonia and testing for ions using different chemicals such as silver nitrate.
In a hypothetical scenario, food chemists use titration to concoct a brine solution for producing the crunchiest pickles. They also analyze store-bought pickle juices. In addition to reinforcing titration techniques, the activity requires the use of significant figures and calculation of percent error. Consider this detail-oriented lab as a fun spin on the typical titration exercise!
Students participate in a simulation of how diseases are transmitted. Each student holds a test tube, with only one containing the "disease" while the others have water. They move around the room until told to stop. Using droppers to place some of their solution into their neighbor's tube, they are spreading the disease. Finally, they try to determine the original source of the infection.