Chemistry Paper One Revision Question 2026

1 CHEMISTRY PAPER ONE 2026 NAME…………………………………………………STREAM…………………… SECTION A Answer all items in this section in the spaces provided 1. Whenever Peter ’s grandmother fell sick, she resisted going to the hospital and chewed leaves of mangoes, eucalyptus tree plus a cup full of hot water in which she dissolved seeds of Dutchman’s pipe. This time round she was diagnosed with cough, flue and fever plus convulsion and was rushed to a nearby health facility. Her body temperature was high and was given some tablets and an injection, the condition of Peter’s grandmother improved tremendously. Task; As a chemistry learner; (a) State the category of the products used to treat Peter’s gr andmother. ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………. (b) Explain how the product(s) work to help Peter’s grandmother. ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ……………………………………………………………………………………… … ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ……………………… (c) Help Peter’s grandmother understand the challenges associated with long -term use of the products(s) …………… …………………………………………………………………………… ………………………………………………………………………………………… 2 ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………. (d) Advise Peter’s grandmoth er on which product to use. ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ……………………………………………………………… …………………… 2. Kampala cement factory wants to produce magnesia to be used as a refractory material in a furnace during the manufacture of cement .Magnesia is manufactured by decomposition magnesite according to the following equation MgCO 3(g) MgO(g) + CO 2(g) In a day the company uses 25kg of magnesia in the furnace and therefore wants to know how much magnesite is required per day. You have been contacted for some help. Task : As a student of chemistry: (a) Explain the categories of the products. ………………………………… …………………………………………………………………………………………… ……………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………… ……………………………………………………………………………………………………………………………… ……………… (b) Explain the reasons that make magnesia suitable for its application. ………………………………………………………………………………… ………………………………………………………………………………… ………………………………………………………………………………… ………………………………………………………………………………… ………………………………………………………………………………… ………………………………………………………………………………… ………………………………………………………………………………… ………………………………………………………………………………… ……….. 3 (c) Calculate the mass of …