Materials: Ring stand & ring Wire gauze Hot plate 400-mL beaker 16 x 150 mm test tube Boiling chip 110 C thermometer Split cork 13 x 100 mm test tubes (6) & test tube rack Test tube holder Test tube brush Wash bottle with distilled water Copper wire, heavy gauze Cu Iodine, solid crystals I2 Small vials with samples of cobalt, hydrogen, magnesium, manganese, neon, oxygen, silicon, sulfur, tin, zinc Methyl alcohol, CH3OH Boiling point unknown Copper (II) sulfate, CuSO4-5H20 Calcium carbonate crystals CaCO3 Amyl alcohol (pentanol) C5H11OH Ammonium bicarbonate, solid NH4HCO3 Potassium Bicarbonate, solid KHCO3 Sodium carbonate solution, 0.5 m Na2SO4 Sodium sulfate solution, 0.1 M Ca(NO3)2 Copper (II) nitrate solution, 0.1 M Cu(NO3)2
Ammonium hydroxide solution, 6 M NH4OHProcedure:A.Observation of Elements1.Observe vials of the following elements and record your observations in the DataTable. Classify each element as a metal, semimetal, or nonmetal.B.Physical Properties1.Boiling Point(a)Support a 400-mL beaker on a ring stand as shown in Figure 5.3. Add 300-mL ofdistilled water to the beaker, bring to a boil, and shut off the burner. Add a boilingchip and 20 drops of methyl alcohol into a 16 x 150 mm test tube. Place the testtube in the hot water and suspend a thermometer about 1 cm above the liquid.(b) After the alcohol begins to boil in the test tube, record the boiling point whenalcohol drips from the tip of the thermometer ever few seconds.(c) Record the number of an unknown liquid and determine the boiling point of theunknown liquid.2.Solubility of a Solid in WaterAdd 20 drops of distilled water into two test tubes. Drop a copper sulfate crystal into one test tube, and a calcium carbonate crystal into the other. Shake the test tubes briefly to observe solubility. State whether each solid is soluble or insoluble in water. 3.Solubility of a Liquid in WaterAdd 20 drops of distilled water in two test tubes. Add a few drops of methyl alcohol to one test tube, and amyl alcohol to the other. Shake the test tubes briefly to mix the liquids. State whether each liquid is soluble or insoluble in water. C.Chemical Properties1.Reactions of Compounds(a)Put a pea-sized sample of ammonium bicarbonate into a small test tube. Use a testtube holder and hear gently with a cool flame and note any changes, including odor. Classify your observation as a physical change or a chemical change. (b) Put a pea-sized sample of potassium bicarbonate into a small test tube. Use a test
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