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Safety
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Mud turtles have green or dark brown smooth shells with no patterns on them. They are small turtles; only 3 to 5 inches long, and eat tadpoles, worms, insects, and plants.To identify whether the following changes are physical or chemical. Safety Precautions: The safety precautions you should know for an experimental lab are always wear safety goggles so chemicals don’t burn your eyes, for girls and boys you should tie your hair back and roll up your sleeves so your hair or sleeves don’t catch on fire. You should always stand up in a lab because you react faster and keep the aisles clear. If you’re using a Bunsen Burner never leave it unattended, and if your checking the odour of a chemicals always use your hands to waft the fumes carefully towards you. Chemical spills should be cleaned instantly. Also make sure the lab table is clear of any flammable items. No metals are to be dumped into the sink, same with Barium Nitrate and copper sulfate. Any acid is corrosive. Materials: Zinc Hydrochloric Acid (6 mol) Lead Nitrate Vinegar Potassium Iodide Baking Soda Copper Sulfate Barium Nitrate Magnesium Bunsen Burner Matches Test Tube Rack Pipette Scoopula Water Test Tubes Bromothymol Blue Procedure: 1) Magnesium and Oxygen 1. Put safety goggles on if you don’t already have them on for all experiments. 2. Plug the Bunsen burner into the gas valve turn the gas on. 3. When the flame appeared make sure it is blue. 4. Hold the Magnesium with tweezers in the flame. 5. Observe and record the results. 6. When a spark of white light has shown put the magnesium into a beaker of water. 7. Clean up the Bunsen burner and station for all experiments. 2) Zinc and Hydrochloric Acid 1.
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