• Free Essays

    Material Plan Essay

    1. A list of all of the potentially dangerous materials your lesson may require (depends on the subjects being taught, below are only some examples of chemicals used in school lab) Barium Peroxide Hydrogen Peroxide, 30% Potassium Chlorate Potassium Permanganate Chromium and Chromium Compounds Chlorine Chloroform Ethylene Thiourea Formaldehyde Hydrogen Sulfide Lead Acetate Lead Chloride Lead Phosphate Mercury and mercury compounds Nickel Potassium Chromate Saccharin Silver Nitrate Thiourea

  • Free Essays

    Essay on Chemical Fertilizers

    When I wondered what plants eat, it turns out that they are able to eat everything they can get out of the soil, air and water. What kind of “food” is it? Here are the main components: water, carbon, nitrogen, phosphorus, potassium, copper, molybdenum, calcium, iron, manganese, zinc, sulfur, etc. Almost the whole periodic table is the “food” for our green friends. All this is called inorganic fertilizers (excluding water and carbon, of course). Fertilizers can be simple and complex. Ordinary fertilizers contain a single element (e.g., nitrogen or phosphorus), when complex are composed of two or more components. Wisdom of Mother Nature is that each plant independently synthesizes the…