Can an antacid tablet like Tums or Alka-seltzer be used to protect soils from acid rain?.Can a base such as limestone or limewater be used to protect plants from acid rain?.Do our soils show the effects of acid rain?.You may also be able to collect rain water and test its pH level to see if it is acidic enough (pH ~ 4.0) for your experiment.You can make artificial acid rain by taking distilled water and slowly adding sulfuric acid (one drop at a time) until the pH of the water reads about 4.0.Which de-icing agent used on roads in winter has the least negative environmental impact?.
How do garden soils with different amounts of nitrogen, phosphorus, potash, or pH compare? (Use a soil analyzer.)
Do common antibiotics interact differently with Gram-positive and Gram-negative bacteria? Use the Gram stain method for testing whether Gram-positive or Gram-negative bacteria is more common in your house.Are there substances in your kitchen (garlic, red pepper, curry, tea tree oil, etc.) that have natural antibacterial properties?.What effect do household cleaners have on a bacteria culture? What about temperature? What is the best or worst environment in your house for bacteria growth?.Use petri dishes and agar to grow bacteria.