Part 4: Applying the ideas Learning outoornm: [Id-5k: describe beta-positive f|1+j and beta-negative [Ii-j decay, using first-generation elementary fermions and the principle of charge consewation [Feynman diagrams are not required]. I14- lsls: explain that concepts, models and theories are often used in interpreting and explaining observations and in predicting future observations III-Jets: explain that scientic knowledge is subject to change as rre'lt.I evidence becomes apparent and as lows and theories are tested and subsequently revised, reinforced or rejected Chapter 1?: The development of moder of the structure of matter is ongoing. [31] marks] 1. in the early 19005, which three subatomic particles were considered the fundamental building blocks of matter? Which of these particles is still considered to be fundamental? Answer: 2. Why was the quark theory first proposed? Clutline the experimental evidence that supports this theory. Explain why the standard model now includes six quarks instead of the three originally suggested by Sell-Mann and Zweig. Answer: 3. identify a major difference that distinguishes [a] leptons from hadrons {b} mesons from baryons [c] fermions and bosons ADE-WET: 4. What experimental evidence suggests that the proton contains three smaller particles? Answer: 5. Why do physicists require extremely high energy particles for studying the structure of nucleons? Answer: IE. Why is it probably impossible to observe an individual quark on its own? Answer: '3'. Compare the quark composition of a proton to that of a neutron. Answer: 3. Describe the difference between mesons and haryons in terms of quarks. AHS'WIEI': Si. Using quark theory, write an equation for the beta decay of a neutron. Show that charge is conserved in this decay process. AHS'WIEI': ll]. What is missing in the following equation? Justify your answer. Identify each of the particles. _+ Ed -r udd +11; : 11. Which fundamental force is strongest over large distances? Which fundamental force is strongest over nuclear distances? Answer: 12. What are two advantages of using units of I'ntle'i-itc2 to express the mass of subatomic particles? Answer: 13. Describe an experiment that provided evidence for the existence of quarks. Answer: Answer: