flush any skin and eyes for 20min in water. Isopropyl Alcohol- highly flammable liquid, water miscible. Isolate area for at least 100 meters. Use alcohol resistant foam to extinguish any fire and eliminate any ignition sources for a spill. first aide- move victim to fresh air, administer o2, remove all contaminated clothing, if in contact with eyes flush for 20min and wash the skin with soap and water.
Allow the splint to burn until the color fades. Don’t let any solids to fall into the burner. -Soak the wooden splint in the “rinse water” to put it out completely; move it to trash. -Record observations on flame color produced by the metallic salt in the Data Table. -Repeat above steps (middle section) for all metallic salts (five total).
Repeat steps 6-8 with the remaining chemicals, including the unknown. 10. All chemicals can be rinsed down the sink. Extinguish the flame by carefully replacing the cap over the flame. Data Table: | Sodium Nitrate | Barium Nitrate | Calcium Nitrate | Cupric Nitrate | Lithium Nitrate | Potassium Nitrate | Strontium Nitrate | Unknown | Flame Color | | | | | | | | | Results and Discussion: 1.
Take sample of Zinc Iodide and dissolve in solution. Then, take the battery, with exposed wire tips attached, and place the tips into the solution. In about 1-2 minutes, there should be a red-brown color coming out of one of the wires, and a dark substance depositing on the other wire, these should iodine and zinc respectively. 2. What are the identities of the substances found after electrolysis and heating?
Then, wait at least ten minutes for the zinc to settle. If after ten minutes the solution is not clear remove the solution with a dropper being careful not to get any of the zinc. Obtain filter paper and funnel. Transfer the solution from the dropper drop wise into a new test tube through the filter paper. For every 20 drops of solution you will add 0.1g of zinc to the new test tube.
After that, dissolve the sample in 2 mL of deionized water and shake the test tube for 1 to 1 ½ minutes to dissolve the solid. Place another dry test tube in a 50mL beaker and weigh it. Find a bottle of barium iodide and record the name and molar mass. Then, weight out either anhydrous barium iodide or barium iodide dehydrate into this test tube and dissolve is it in 2 mL of deionized water. Pour the contents of one of the test tubes into the other and a reaction should occur and you should see a white precipitate of barium sulfate form.
Begin by adding 1 mL of rubbing alcohol to test tube and attach a thermometer to it. b. Place assembly in water bath and begin to heat beaker c. As isopropyl alcohol begins to boil, bubbles begin flowing from the capillary tube d. While temperature is decreasing, record the temp. when the last air bubble comes out of the capillary tube. e. Let assembly cool down and repeat process two more times.
Experimental Design Steps Salt will be added to boiling water in three trials Trial 1: 1. 2 cups of water will be heated until temperature stops rising and that temperature will be recorded. 2. Add ½ tsp. salt, stir and record temperature.
Aim To compare the reactivity of various metals by observing their reaction with hydrochloric acid Hypothesis That the all the metals will produce foam and a pop. Variables Independent – Magnesium, Aluminium, Zinc, Copper Dependent – Detergent, Hydrochloric Acid Controlled – Size of the metals, amount of detergent and hydrochloric acid Materials 2 M hydrochloric acid Detergent 10 x test tubes and test tube rack and 5 rubber stoppers 0.5 cm pieces of magnesium, aluminium, zinc and copper 2 cm pieces of magnesium, aluminium, zinc and copper Steel wool Ruler Timer Bench mat Matches and birthday candle Marking pen Safety Remember to wear safety glasses and protective gloves when you do this experiment. 2 M HCl is corrosive. Wash with plenty of water should you get any on your skin or in your eyes. Method Part 1 1 Clean the surface of the 0.5cm piece of magnesium with a piece of steel wool 2 Place the magnesium into a test tube 3 Add three drops of detergent to the test tube 4 Add 2 cm of hydrochloric acid to the test tube.
Transfer the liquid directly from the bottle to your test tube. 2. The bottle must be stoppered after the liquid have been transferred out. 3. Test tubes are washed immediately after completing each test.