Tuesday, February 11, 2014

Lab Report: Physical and Chemical Changes

Purpose: To investigate the difference between physical and chemical substance changes in matter. Materials: Safety glasses 13 small sort tubes Test tube rack Test tube softener 2 100-mL beakers Funnel Watch glass Stirring rod Evaporating service up Magnet Magnifying glass Crucible tongs Spatula Balance Meeker burner butt against stand Iron ring Wire gauze Forceps imputable south Iron filings sodium Bicarbonate Sodium Chloride booty Sand Magnesium screw thread Hydrochloric Acid Distilled water pick up paper 9 disposable dishes Procedure: 1. chase after(prenominal)wards 7 of the dishes with the names of the following products: south, Iron, Sodium Bicarbonate, Sodium Chloride, Sugar, Sand, and Magnesium. result small samples of all(prenominal) in the appropriate dishes. 2. Examine each sample with a magnifying glass and magnet and record your observations in the information table. 3. Put small samples of each substance in a test tube along with 3 mL of water to dete rmine their solubility. 4. Mix some of the Iron and Sulfur on a clean disposable dish and move wind the categorisation with a magnifying glass and magnet. Record your observations in the data table. Save and label this mixture. 5. Mix some of the good sense and Sodium Chloride on a clean disposable dish and study the mixture with a magnifying glass and magnet. Then, place this mixture in a clean 100-mL beaker. Add 30 mL of pray water and stir. Prepare a filtration setup, filter, and record your observations. 6. shoot 10 mL of the filtrate into an evaporating dish, prepare a modify setup, and gently heat until all of the liquid is gone. Examine the eternal sleep in the evaporating dish and on the filter paper. 7. Using the crucible tongs, hold a dry piece of Magnesium ribbon in the flame. Quickly place the burning ribbon on the acquire glass. Compare the appearance of the ribbon before and after burning. 8. If you hope to ge t a full essay, order it on our website: BestEssayCheap.com

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