- 2 February, 2023
KCSE Chemistry Form four Notes
· Chemistry Form 4 Notes : THERMOCHEMISTRY · Chemistry Form 4 Notes : RADIOACTIVITY · Chemistry Form 4 Notes : ELECTROCHEMISTRY · Chemistry Form 4
KCSE Chemistry Form Three Notes
· Chemistry Form 3 Notes : THE MOLE – Introduction to the mole, molar masses and Relative atomic masses · Chemistry Form 3: Gas laws
24. Radioactivity Questions and Answers
Radioactivity Questions 1. Complete the following equation by determining the values of U and V. Th Pa + e U……… V……………..
23. Organic chemistry II (alkanoic acids and alkanols) Questions and Answers
Organic chemistry II (alkanoic acids and alkanols) Questions 1. A student mixed equal volumes of Ethanol and butanoic acid. He added a few drops of
22. Metals Questions and Answers
Metals Questions 1. The following diagram represents extraction of sodium by the Down’s cell (a) Why is the anode made of graphite in
21. Electrochemistry Questions and Answers
Electrochemistry Questions 1. The setup below was used to carry out the electrolysis of Magnesium sulphate solution using inert electrodes. (i) Name a suitable
20. Reaction rates and reversible reactions and Answers
Reaction rates and reversible reactions 1. Study the following equilibrium reaction and answer the questions that follow:- HL(aq) + H2O(l) H3O+(aq) L–(aq)
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.
18. Acids, bases and salts Questions and Answers
Acids, bases and salts Questions 1. Study the reaction below and answer the questions that follow NH3 (g) + H2O (l) NH4+ (aq) + OH–(aq)
17. Chlorine and its compounds Questions and Answers
Chlorine and its compounds Questions 1. (i) State one observation made in this experiment (ii) Identify the substances formed in the above reaction 2.
16. Sulphur and its compounds Questions and Answers
Sulphur and its compounds Questions 1. Sulphur is extracted from underground deposits by a process in which three concentric pipes are sunk down to the
15. Nitrogen and its compounds Questions and Answers
Nitrogen and its compounds Questions 1. The apparatus below was set-up to show the catalytic oxidation of ammonia. Study the diagram and answer the questions
14. Organic chemistry 1 Questions and Answers
Organic chemistry 1 Questions 1. Use the flow chart below to answer the questions that follow:
13. The mole Questions and Answers
The mole Questions 1. In an experiment magnesium ribbon was heated in air. The product formed was found to be heavier than the original ribbon.
12. Gas laws Questions and Answers
Gas laws Questions 1. A sample of unknown compound gas X is shown by analysis to contain Sulphur and Oxygen. The gas requires 28.3 seconds
11.Carbon and its compounds Questions and Answers
Carbon and its compounds Questions 1. (a) State one use of graphite (b) Both graphite and diamond are allotropes of element Carbon. Graphite conducts electricity