10. Effect of an electric current on substances Questions and Answers
Effect of an electric current on substances Questions1. The set-up was used to electrolyse Lead (II) bromide. Study it and answer the questionsthat follow; (a)
11.Carbon and its compounds Questions and Answers
Carbon and its compounds Questions1. (a) State one use of graphite (b) Both graphite and diamond are allotropes of element Carbon. Graphite conducts electricity whereas
19. Energy changes in chemical and physical processes Questions and Answers
Energy changes in chemical and physical processes Questions 1. 6g of Potassium nitrate solid was added to 120cm3 of water in a plastic beaker. The mixture
8. Structure and bonding Questions and Answers
Structure and bonding Questions1. Ethanol is a liquid at room temperature but does not conduct electricity. Explain.2. a) Distinguish between a covalent bond and a
6. Structure of the atom and the periodic table Questions and Answers
6. Structure of the atom and the periodic table Questions1. In an experiment an unknown mass of anhydrous sodium carbonate was dissolved in water and
15. Nitrogen and its compounds Questions and Answers
Nitrogen and its compounds Questions1. The apparatus below was set-up to show the catalytic oxidation of ammonia. Study the diagram and answer the questions that
KCSE Chemistry Form four Notes
· Chemistry Form 4 Notes : THERMOCHEMISTRY· Chemistry Form 4 Notes : RADIOACTIVITY· Chemistry Form 4 Notes : ELECTROCHEMISTRY· Chemistry Form 4 Notes : ORGANIC
3. Acids, bases and combustion Questions and Answers
Acids, bases and combustion Questions1. The table below shows solutions A, B and C are tested and observations records as shown:SolutionObservations on indicatorAMethyl orange turns