MR LUKE DITTO DITTO ARENA Mr Luke wa.me/+233593635373 Chemistry Trial Questions (2021) 1. a) i) Define the term isotope. ii) Name the instrument used in determining isotopes. iii) Neon (Ne) which has atomic number 10,has three isotopes of mass number 17,19 and 21. Determine the number of neutrons present in each. b) What name is given to each of the following processes? 0593635373 i) The reaction between an acid and a base. ii) The breakdown of compound by heat energy. 0593635373 iii) The absorption of heat energy to enable a reaction to take place. iv) The addition of substances to hasten the rate of a chemical reaction. v) The passage of a solid substance into the gaseous state without passing through the liquid state. C) i) List two raw materials used in the manufacture of indeginous soap. ii) State three ways of improving upon the quality of indeginous saop. 2) Describe how the relative density of a salt solution can be determined using the hydrometer. 0593635373 3) a) i) What is a chemical compound? ii) State four differences between ionic and covalent compounds. b) i) Give the reason for the treatment of water for domestic use. ii) State three methods of improving upon the quality of water for domestic use. 4) a) i. Explain the term sublimation. ii) Name three substances that can sublime. @OfficialMrLuke 1.2K viewsᴍʀ. ʟᴜᴋᴇ ᴅɪᴛᴏᴅɪᴛᴏ, 10:30
