Water Softener: A material that lowers water hardness when dissolved in water. For example, sodium carbonate ('washing soda') softens water by precipitating Ca2+ ions as caco3. Zeolites soften water by exchanging Ca2+ ions with Na+ ions.

 

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Water Softener: A material that lowers water hardness when dissolved in water. For example, sodium carbonate ('washing soda') softens water by precipitating Ca2+ ions as caco3. Zeolites soften water by exch . . . View Full Definition

Water Hardness: Hard water is water contaminated with compounds of calcium and magnesium. Dissolved iron, manganese, and strontium compounds can also contribute to the 'total hardness' of the water, which i . . . View Full Definition

Water Aerobics: Aerobics classes that do traditional workouts in waist- to neck-high water in a swimming pool. The resistance of the water makes the workout feel far more intense, while the water cushions y . . . View Full Definition

Water Bank Program (WBP): A program to set aside wetlands for a period of 10 years (renewable) for conservation purposes. Participants receive annual rental payments. As these contracts expire, participants are offer . . . View Full Definition

Water 2000 Initiative: The program administered by the Rural Utilities Service whose goal is to improve the quality of drinking water in distressed rural areas with the most serious safe drinking water problems.

Water: Refers to the chemical compound, H2O, as well as its liquid form. At atmospheric temperatures and pressures, it can exist in all three phases: solid (ice), liquid (water), and gaseous (water . . . View Full Definition

Water Based Paint: Any paint made with acrylic, vinyl or latex resins, and thinned with water. It dries more quickly than oil-based paint, has a relatively low odor and cleans up easily.

Water Bath: Are large water filled containers used to maintain processing trays, tanks or chemicals at the correct temperature.

Water Emulsions: Mixture of pigment and synthetic resin in water with low solvent emission, low fire hazard and toxicity and good durability and chemical resistance.

Water Gas: A fuel gas used in industrial synthesis of organic chemicals, and in welding, glassmaking, and other high-temperature industrial applications. Water gas made by passing steam over a bed of h . . . View Full Definition