Upon completion of this lesson, students should be able to:
Soap is prepared by boiling animal fats or vegetables oil with sodium hydroxide . The fats or oils react with alkali or sodium hydroxide to form soap and glycerol.Glycerol is the trihydric alcohol. This note contains brief introduction on soap and detergent along with their formation and uses.
Pesticides are chemical compounds which are used to control or kill the pets. This note contains an information about uses of insecticides and their usefulness and negative impact on nature.
Fertilizers are water soluble substance rich in nutrients which are added to soil to enhance the fertility of the soil. This note contains information on use of fertilizers, their types, and elements that make up good fertilizer.
Ceramics is the science of pottery which may be defined as the objects made from special type of clay, hydrated aluminum silicate (Al2O3.SiO2.2H2O), feldspar and silicates. The pure fine whit clay made of feldspar is called Kaolin or China clay. This brief note contains information on ceramics and their properties.
Fibers are hair-like strands which are extremely long in comparison to their width. They are strong, flexible and spun into yarn and used for fabrics. This note contains information on types, and merits of fibers along with their uses.
Plastics is a synthetic polymer. They can be designed in any shape by applying heat or pressure. This note provides information on types, uses, and effects of plastics.
Cement is a mixture of fine grey powder of calcium silicate and calcium aluminate. This note contains information on cement and its use.
An amorphous, transparent and super cooled liquid is called glass.The water glass is the glass obtained by heating the mixture of sodium carbonate or potassium carbonate with silica at 800 degree celsius. This note provides us an information about Glass.