24. Radioactivity Questions and Answers
Radioactivity Questions1. Complete the following equation by determining the values of U and V. Th Pa + e U……… V…………….. 2. (a) Distinguish between
7. Chemical families Questions and Answers
Chemical families Questions1. Study the information in the table below and answer the questions that follow: Element Atomic radius (nm)Ionic radius (nm)W0.1140.195X0.0720.136Y0.1330.216Z0.0990.181 (a) Would these
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
23. Organic chemistry II (alkanoic acids and alkanols) Questions and Answers
Organic chemistry II (alkanoic acids and alkanols) Questions1. A student mixed equal volumes of Ethanol and butanoic acid. He added a few drops of concentrated
14. Organic chemistry 1 Questions and Answers
Organic chemistry 1 Questions1. Use the flow chart below to answer the questions that follow: (a) What observation would
22. Metals Questions and Answers
Metals Questions1. The following diagram represents extraction of sodium by the Down’s cell (a) Why is the anode made of graphite in this case instead
2. Simple classification of substances Questions and Answers
Simple classification of substances Questions1. The diagram below shows the heating curve of a pure substance. Study it and answer the questions that follow:
16. Sulphur and its compounds Questions and Answers
Sulphur and its compounds Questions1. Sulphur is extracted from underground deposits by a process in which three concentric pipes are sunk down to the deposits