<p> Worksheet 17 NUCLEAR CHEMISTRY</p><p>Syllabus reference 9.2.5</p><p>1 Match the statement on the left with the most appropriate answer on the right. Write the letter corresponding to this in the space provided. ______i Elements which actively emit radiation. a nuclear fission</p><p>______ii Elements with the same atomic number but b alpha particle different mass number. ______iii Relatively heavy positively charged radioactive c carbon-14 emission with low penetrating power. ______iv Lighter negatively charged radioactive d transuranic emission. ______v Penetrating ray similar to X-ray. e Geiger-Müller counter ______vi Elements with atomic number greater than 92. f radioactive ______vii Radioactive isotope used for carbon dating. g half-life ______viii Final product of uranium-238 decay. h gamma ______ix Splitting a nucleus into two roughly equal i lead fragments. ______x Time required for half the atoms in a given j isotopes sample to undergo radioactive decay. ______xi One type of device used for detecting radiation. k beta particle 2 Complete the following table.</p><p>NAME ALPHA PARTICLE BETA PARTICLE GAMMA RAY</p><p>Symbol α</p><p>Identity Electromagnetic radiation Relative mass 0.00055</p><p>Relative charge</p><p>Penetrating power Very low</p><p>Effect of electric and No effect magnetic fields</p><p>Copyright ©2007 McGraw-Hill Australia CONQUERINGCHEMISTRY HSC Module 1 WS 17 3 a How many protons, neutrons and electrons are present in each of the following atoms? i 7935Br</p><p> ii 8135Br</p><p> iii 9038Sr</p><p> iv 12353I</p><p> b Write the symbols of the type in Q3a for: i iodine-131</p><p> ii iridium-193</p><p> iii antimony-121</p><p> iv rubidium-123</p><p>4 a Using the figure below, decide whether or not the following isotopes would be stable.</p><p>Copyright ©2007 McGraw-Hill Australia CONQUERINGCHEMISTRY HSC Module 1 WS 17 i 5526Fe</p><p> ii 9344Ru</p><p> iii 24294Pu</p><p> b Describe the two conditions under which a nucleus is unstable.</p><p>______</p><p>______</p><p>______</p><p>______</p><p>5 Describe two processes by which scientists have been able to produce transuranic elements.</p><p>______</p><p>Copyright ©2007 McGraw-Hill Australia CONQUERINGCHEMISTRY HSC Module 1 WS 17 ______</p><p>______</p><p>______</p><p>______</p><p>______</p><p>6 Name three instruments or processes that can be used to detect radiation.</p><p>______</p><p>______</p><p>______</p><p>______</p><p>______</p><p>______</p><p>______</p><p>______</p><p>Copyright ©2007 McGraw-Hill Australia CONQUERINGCHEMISTRY HSC Module 1 WS 17 </p>