Identifying Powder Lab

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Student name: ___Yuna_____; Other Group Members: ____Kevin________; Date: _September 11____ Purpose: To identify a powder based on its physical and chemical properties. Hypothesis: If given an unknown powder, then we will be able to identify it because the results of testing will be identical with one of them. The same powder will have the same physical and chemical properties. Equipment and Materials: - 2 Well plates, scoopula, distilled water bottle, goggles, test tubes, test tube rack, eye droppers, wooden splint , squares of papers, labels - Icing sugar, cornstarch, Aspirin powder, baking powder, baking soda, distilled water, universal indicator, vinegar, iodine, and mystery powder A Procedure: (you can write out the procedure…show more content…
6) Place each powder in separate wells of the 2 well plates. 7) Collect the 4 liquids. 8) Put the liquids (with eyedroppers) on wells. 9) Observe and record. 10) When all the reactions have been tested and recorded, return or dispose all materials and equipment. 11) Wash hands with water and soap. Table 1. Physical and chemical properties and changes of 6 different white powders. Observation: Neatly redo your data table. You should elaborate on your descriptions. Write the evidence for chemical changes in a different color (or highlight). Please include a descriptive title for your table. Substance Physical Property Chemical Properties: reaction with (Look at texture) Water Universal Indicator Vinegar Iodine Icing Sugar White Smooth Dissolve No color Change color Orange No color Brown Cornstarch White Soft White Dissolve Change color Light orange White Turn black Aspirin Powder White Rough Doesn’t dissolve Change color Red white Turn black Baking Soda White Smooth Doesn’t dissolve Change color Yellow Bubbles form Brown Baking Powder White Rough Dissolve Change color Orange a bit yellow Bubbles form Turn black Mystery Powder (Choose A or B) White Smooth

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