The Need for Proper Handling of Radioactive Substances (Structured Questions)

Question 1:(a) Diagram 1.1 and 1.2 shows activities which involved the radioactive substances.(i) State the radioactive radiation used in medical field in Diagram 1.1.(ii) State the uses of Carbon-14 in Diagram 1.2.(iii) State one effect of nuclear explosion to human being.(iv) What substance is used to make a container to keep radioactive substance safe?(b) Diagram … Read more

Radioactive Substances (Structured Questions)

Question 1:Diagram 1 shows three radioactive radiations, P, Q and R.(a) Name radioactive radiations P and R.(b) State the charges of radioactive radiation P and Q.(c) Name the substance that can stop the penetration of radioactive radiation R.(d) Name the radioactive radiation which is used to kill cancer cells. Answer:(a)P: Alpha radiationR: Gamma radiation(b)P: Positively … Read more

6.2.4 Process of Generating Electricity from Nuclear Energy

6.2.3 Uses of Nuclear Fusion 1. Nuclear energy is used to (a) Generate electrical energy (b) Operate satellites (c) Propel cruises, aircraft carriers and submarines   Nuclear power station 6.2.4 Process of Generating Electricity from Nuclear Energy 1. In a nuclear power station, nuclear energy is produced in a nuclear reactor to generate electricity. 2. Figure … Read more

6.2.2 Nuclear Fusion

6.2.2 Nuclear Fusion 1. Nuclear fusion is a process that two light nuclei combine to form a heavier and more stable nucleus together with the release of a huge amount of nuclear energy. Nuclear fusion 2. The energy produced by nuclear fusion is safe to use as no radioactive radiation is produced during the process.   3. A hydrogen bomb … Read more

(C) Radioisotopes

(C) Radioisotopes Radioisotopes are isotopes of a radioactive substance. Examples of Radioisotopes Carbon-14 (Carbon dating) Cobalt-60 (Radiotherapy) Uranium-235 (Nuclear fuel) Uranium-238 Plutonium-238 Plutomium-239 (Nuclear fuel) Uses of Radioisotopes 1.   There are two types of isotopes, namely a.   the stable isotopes (non-radioactive) b.   the non-stable isotopes (radioactive). 2.  Unstable isotopes go through radioactive … Read more