| A | B |
|---|
| Aeration | the process of supplying with air or exposing to the circulation of air. Synonyms: airing, ventilation, breathing. |
| Bacteria | any of the unicellular prokaryotic microorganisms of the class Schizomycetes, which vary in terms of morphology, oxygen and nutritional requirements, and motility, and may be free-living, saprophytic, or pathogenic in plants or animals. |
| Chlorination | the process of treating or combining with chlorine or a chlorine compound. Most often the purpose is to disinfect of harmful microorganisms. |
| Coagulation | the transformation of a liquid into a soft, semisolid, or solid mass. Synonyms: clotting, congealing, curdling |
| Developing country | has a relatively low standard of living, an undeveloped industrial base, and a relatively low Human Development Index score (HDI). In developing countries, there is low per capita income, widespread poverty, and low capital formation. |
| Disinfect | to cleanse so as to destroy or prevent the growth of disease-carrying micro-organisms. Synonyms: decontaminate, sterilize, sanitize, clean. |
| Fertilizer | any of a large number of natural and synthetic materials, including manure and nitrogen, phosphorus, and potassium compounds, spread on or worked into soil to increase its capacity to support plant growth. |
| Filtration | the act of passing a gas or liquid through a porous material in order to separate the fluid from suspended particulate matter. |
| Pesticide | a chemical used to kill pests, especially insects. |
| Sedimentation | the act or process of depositing sediments. |
| Sediments | material (such as stones and sand) that is carried into water by water, wind, etc. or settles to the bottom of a liquid |
| Virus | any of various simple submicroscopic parasites of plants, animals, and bacteria that often cause disease and that consist essentially of a core of RNA or DNA surrounded by a protein coat. Unable to replicate without a host cell. |
| OHEC | Observation, Hypothesis, Experiment, Conclusion (mnemonic for the Scientific Method) |
| Contagious | capable of being transmitted by bodily contact with an infected person, other organisms (example consumption of contaminated organisms) or object. |
| Contaminated | made impure or unclean by contact or mixing. |
| Epidemic | spreading rapidly and extensively by infection and |
| Herbicide | a chemical substance used to destroy or inhibit the growth of plants, especially weeds. |
| Micro-organism | an organism of microscopic or submicroscopic size, especially a bacterium or protozoan. Synonyms: germ, microbe. |
| Epidemiology | the branch of medicine that deals with the study of |
| Water quality | the degree to which water is suitable for different uses such as drinking, bathing, or recreation. |
| Waterborne | transmitted in water. |
| Parasite | an organism that grows, feeds, and is sheltered on or in a different organism while contributing nothing to the survival of its host. |
| Potable | fit to drink. Synonym: drinkable. |
| Sanitation | formulation and application of measures designed to protect public health. |
| Toxic Metal | a metal capable of causing injury or death, especially by chemical means. Synonym: poisonous metal or heavy metal |
| acid | produces hydrogen ions when dissolved in water andAlmost always starts with "H" |
| base | a compound that has a pH of more than seven; releases hydroxide ions in solution, accepts hydrogen ions or releases an electron pair |
| pH | the measure of how acidic or basic a solution is; the negative log of the concentration of hydrogen ions (H⁺) |
| Ionization | is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes. |
| alkaline | having a pH value greater than 7. |
