Loneliness and the Influence It Has on Mindfuckery

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Formal lab report: Chemical or Physical Change?

Problem: The purpose of this lab is to discover which observations indicate that a ………………….chemical change has taken place. Materials:
Part 1: Lead [II] nitrate; Potassium iodide; 2 Test tubes; Test tube rack Part 2: The materials are found on page 161 in the textbook Sciencepower 9 Part 3: The materials are found on page 161 in the textbook Sciencepower 9 Part 4: 100 mL Beaker; Hot plate; Beaker tongs; Wire gauze; Copper [II] sulfate ………………solution [aq]; 1 Plastic pipette Part 5: The materials are found on page 162 in the textbook Sciencepower 9 Part 6: The materials are found on page 162 in the textbook Sciencepower 9 Part 7: Test tube; Test tube rack; Dilute hydrochloric acid; Magnesium ribbon Part 8: 3 Test tubes; Test tube rack; 2 Spatulas; 2 Stoppers; De-ionized water; ………………Ammonium chloride; Calcium Chloride Procedure:

Part 1: i) Observe and record the physical properties of each starting substance …………………..before mixing the substances together. …………… ii) Pour 2-3mL of potassium iodide solution into a clean dry test tube. ………………iii) Pour a few drops of lead [II] nitrate solution into a second test tube. ………………iv) Carefully pour the potassium iodide solution into the test tube of lead [II] …………………..nitrate. …………… I v) Record your observations immediately. Wait a few minutes and observe …………………..again. ……………….vi) Dispose of the waste material into the container labeled “waste”. ……………….vii) Rinse the test tubes with the wash bottle over top of the waste container. ……………………..Please use rinse water sparingly. ……………….viii) Turn your test tube upside down in the test tube rack to drain and dry. Part 2: The procedure is found on page 161 in the textbook Sciencepower 9 Part 3: The procedure is found on page 161 in the textbook Sciencepower 9 Part 4: i) Place approximately 25 drops or copper (II) sulfate into a 100 ml beaker. ………………ii) Record observations.

………………iii) Turn the setting on the hot plate to medium. iv) Place the beaker on the hot plate and evaporate off the liquid. v) Using the beaker tongs to remove the beaker from the hot plate and place it ………………….on the wire gauze. Turn off the hot plate. vi) Record observations.

vii) Dispose the waste material into the container labeled “waste”, put it in the ……………………city landfill garbage container. viii) Wash out the beaker and turn it upside down to drip and dry. Part 5: The procedure is found on page 162 in the textbook Sciencepower 9 Part 6: The procedure is found on page 162 in the textbook Sciencepower 9 Part 7: The procedure is found on page 162 in the textbook Sciencepower 9 Part 8: i) Place 2mL to 3mL of de-ionized water into a test tube. ii) Using a spatula obtain a sample of calcium chloride. iii) Carefully add the calcium chloride to the test tube. Place a stopper in and …………………...gently shake the contents. iv) Repeat steps 1-3, using ammonium chloride instead of calcium chloride. v) Compare the two test tubes for any differences. vi) Dispose of waste material in waste container provided. vii) Rinse the test tubes with the wash bottle over waste container. viii) Turn your test tubes upside down in the test tube rack to drain and dry. Observations:

Table of Observations:
Station:| Starting Substances:| Physical Properties:| Changes:| 1| Lead [II] Sulfate| Low viscosity; liquid; transparent; odourless| Immediately turns yellow; turns opaque; a powdery solid forms; fizzing and bubbles| | Potassium Iodide| Low viscosity; liquid; transparent; odourless| | 2| Dilute Hydrochloric Acid| Transparent; liquid; low viscosity; acidic odour| Bubbles formed; calcium carbonate slowly disappeared| | Calcium...
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