Mystery Powder Lab
Purpose
Identify the mystery powder based on its physical and chemical properties.
Hypothesis
The physical properties of each powder can help identify what the mystery powder is, but the chemical properties will determine the answer.
Safety * Wear safety glasses. * Do not taste any substance in this experiment * Iodine solution and some powders are hazardous. * Wash hands when you have finished.
Materials
* Eye protection * Well plate * 6 small toothpicks for stirring each powder * 6 white powders: icing sugar, cornstarch, Aspirin powder, baking soda, baking powder, and the mystery powder * Scoopula * Test solutions in dropper bottles: water, universal indicator, vinegar, and iodine solution …show more content…
My observations have reflected my hypothesis. Though the physical properties helped eliminate a couple of powders, I couldn’t get a definite answer because the icing sugar, cornstarch, baking powder, and the mystery powder looked generally the same. Chemical reactions are slightly more accurate because two different substances can look the exact same but one may react with a certain substance while the other one doesn’t. Had we only done one test with, for example, iodine solution, it may not have worked because many of the powders turned a shade of green and they were mostly similar. Since we did many different tests, it was easier to math up the mystery powder with baking powder because all of their tests had the exact same results while the others varied. I also recorded what kind of mixture it was (solution, suspension, emulsion, colloidal dispersion) which also helped to identify the powder. I’ve learned that you can apply physical and chemical properties into situations that you wouldn’t think involved chemistry, like identifying a powder. To conclude, my hypothesis was correct and physical and chemical properties can be applied to problems outside of a science
Identify the mystery powder based on its physical and chemical properties.
Hypothesis
The physical properties of each powder can help identify what the mystery powder is, but the chemical properties will determine the answer.
Safety * Wear safety glasses. * Do not taste any substance in this experiment * Iodine solution and some powders are hazardous. * Wash hands when you have finished.
Materials
* Eye protection * Well plate * 6 small toothpicks for stirring each powder * 6 white powders: icing sugar, cornstarch, Aspirin powder, baking soda, baking powder, and the mystery powder * Scoopula * Test solutions in dropper bottles: water, universal indicator, vinegar, and iodine solution …show more content…
My observations have reflected my hypothesis. Though the physical properties helped eliminate a couple of powders, I couldn’t get a definite answer because the icing sugar, cornstarch, baking powder, and the mystery powder looked generally the same. Chemical reactions are slightly more accurate because two different substances can look the exact same but one may react with a certain substance while the other one doesn’t. Had we only done one test with, for example, iodine solution, it may not have worked because many of the powders turned a shade of green and they were mostly similar. Since we did many different tests, it was easier to math up the mystery powder with baking powder because all of their tests had the exact same results while the others varied. I also recorded what kind of mixture it was (solution, suspension, emulsion, colloidal dispersion) which also helped to identify the powder. I’ve learned that you can apply physical and chemical properties into situations that you wouldn’t think involved chemistry, like identifying a powder. To conclude, my hypothesis was correct and physical and chemical properties can be applied to problems outside of a science