Observations of Chemical Changes Essay

Objective This experiment is meant to show how certain chemicals defend with each other and can be identified by these reactions number Several different chemical mixtures were poured into the well plate and observed. These included atomic number 11 bicarbonate and hydrochloric sexually transmitted disease, bromothymol blue and hydrochloric acid, ammonia and bromothymol blue, hydrochloric acid and blue dishonor, blue dye and atomic number 11 hypochlorite, potassium iodide and lead nitrate, sodium hydroxide and phenolphthalein, hydrochloric acid and phenolphthalein, sodium hydroxide and sliver nitrate, ammonia and silver nitrate, and ammonia and copper (II) sulfate. many mixtures were also placed in the light or mixed with special hydrochloric acid or dye.Observation TableQuestions a.) Silver nitrate could intimately be used to test for sodium bicarbonate since it causes the chemical to snatch brown. b.) Windex- turns orange with BTB and red with phenolphthalein- basis Dish soap- turns yellowish with BTB and red with phenolphthalein- base Bleach- turns orange with BTB and purple with phenolphthalein- base Scrubbing Bubbles- turns blue with BTB and gray with phenolphthalein- acid c.) The solution contains no vinegar or a very petite amount of vinegar because a pink color indicates a basal solution, and vinegar is and acid. d.) The yellow shade is more acidic and the blue flavor is more basic. e.) Combining the mixture with potassium iodide could easily test for the carriage of lead. If the mixture contained lead, then the potassium iodide would cause the mixture to turn yellow and thick like a solid.Conclusion Many chemicals will expose obvious physical changes when mixed with other chemicals. These mixtures usually result in a change in color or consistency, which can label them from other chemicals. While certain chemicals may react the same stylus with on mixture, testing a chemical with multiple mixtures will nigh likely allow the chemical to be identified.