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(a) Chemistry is used in the following: (i) Washing/cleaning with soap: Washing/cleaning is a chemical process that involves interaction of water, soap and dirt so as to remove the dirt from a garment. (ii) Understanding chemicals of life Living thing grow, respire and feed. The formation and growth of cells involve chemical processes in living things using carbohydrates, proteins and vitamins. (iii) Baking: Adding baking powder to dough and then heating in an oven involves interactions that require understanding of chemistry.   (iv) Medicine: Discovery, test, prescription and dosage of drugs to be used for medicinal purposes require advanced understanding of chemistry (v) Fractional distillation of crude oil: Crude oil is fractional distilled to useful portions like petrol, diesel, and kerosene by applying chemistry. (vi) Manufacture of synthetic compounds/substances Large amounts of plastics, glass, fertilizers, insecticides, soaps, cements, are manufactured worldwide. Advanced understanding of the chemical processes involved is a… Read More »THE ROLE OF CHEMISTRY IN SOCIETY

Catering, Home economics, Home management


Roasting Method Cooking food using direct source of heat which can be done using an oven or over a charcoal fire. Ensure frequent basting or turning of food to keep it moist and ensure even cooking. Food to be roasted should be of good quality e.g. tender cuts of meats. The oven or fire should be ready when beginning to roast. Suggested Foods for roasting   Meat, Maize, Chicken, Potatoes, Arrow roots, Yams, Cassava   General Rules for Roasting   Maize   Chicken   Potatoes   Arrow roots   Yams   Cassava   Baking Method  Cooking food using hot dry air which is done in an oven.  Heat the oven before baking.  Observe the baking duration for the item being baked.  Test for readiness before removing from the oven. Suggested Foods for baking –  Potatoes, bread, cakes, fish, biscuits, pastries and pies General Rules for Baking   Potatoes   Bread… Read More »ROASTING AND BAKING METHODS

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