Top rechargeable batteries batteries that can be electrically recharged at home. They can be repeatedly recharged. Newspaper, cardboard, glass, steel, plastic, used oil, and aluminum are common recyclables. Top recycling separating, collecting, processing, marketing, and ultimately using a material that would have been thrown away. Top reuse the use of a product more than once in its same form, either for the same purpose or a different purpose, such as reusing a soft-drink bottle when it is returned to the bottling company for refilling, or reusing a coffee can as a container for nuts and bolts.
Top silica aerogel a sorptive dust.
Top single use item an item that is used once, then thrown away. For example, a facial tissue. Top sodium hexametaphosphate a chemical added to water to increase the solubility of certain ions and to deter the precipitation of certain chemicals. For example, it is used to prevent calcium from precipitating out of water and clogging pipes. Its thin, passivating film protects metals from corrosion.