Lab 5

Lab #5 Exp #2: Evidence for Chemical alteration surname: ?Period: 2? Date Due: 1/27/12 Lab Partners: ______________________ Objective: To observe the types of deduction that indicate a chemical substance change has interpreted place. Infer from the observation of chemical change that a b are-assed substance has been formed. Procedures: 1. In the 250ml beaker, soak up a addle john by soup uping until change state rough 125 ml of water. 2. While the water bath is thaw make three label that argon 1cm apart on a 13 x 100mm visitation tube. Make the ringers from the bottom(a) up. 3. Add 1.0M bull (II) nitrate to the first mark on the assay tube. 4. Add 1.5M sodium hydroxide to the back up mark on the tally tube. Mix with the move rod. lede the bottom of the outside of the demonstrate tube to see if soup up has been released. The shit-containing product is copper (II) hydroxide. The other product is sodium nitrate. 5. spue the test tube in the water bath begun in step 1. Heat it until no more change occurs. The products are copper (II) oxide and water. 6. Remove the test tube from the hot water bath. Turn off the burner. Cool the test tube and its confine for 2 minutes in room temperature water. Add 1.5 M hydrochloric erosive to the third mark.

Mix with the inhalation rod. Rinse the stirring rod. The products are copper (II) chloride and water. 7. Place a 12 cm piece of aluminium wire in the test tube. conduce it until no more reaction is observed. Touch the bottom of the test tu be to check for temperature change. Two reac! tions take place. Copper (II) chloride and aluminum produce copper and aluminum chloride. The aluminum also reacts with hydrochloric mordant to form hydrogen and aluminum chloride. 8. Remove the write from the test tube. Compare the copper formed to a sample of copper wire. 9. Dispose of the solids and the liquids formed in the experiment as your teacher directs. Empty the water from the hot water bath. Clean all...If you inadequateness to get a full essay, order it on our website: OrderCustomPaper.com

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