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
1. Introduction to chemistry Questions and Answers
Introduction to chemistry Questions1. Wooden splints F and G were placed in different zones of a Bunsen burner flame. The diagram below gives the observations
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)
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
12. Gas laws Questions and Answers
Gas laws Questions1. A sample of unknown compound gas X is shown by analysis to contain Sulphur and Oxygen. The gas requires 28.3 seconds to
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
13. The mole Questions and Answers
The mole Questions1. In an experiment magnesium ribbon was heated in air. The product formed was found to be heavier than the original ribbon. Potassium
21. Electrochemistry Questions and Answers
Electrochemistry Questions1. The setup below was used to carry out the electrolysis of Magnesium sulphate solution using inert electrodes. (i) Name a suitable pair