Chemistry help multiple choice please?





Question 1 (Multiple Choice Worth 3 points)When a radioactive isotope releases a beta particle, the atomic number of the new element is decreased by one. decreased by two. increased by one. increased by two.Question 2 (Multiple Choice Worth 3 points)Which of the following statements is not true of the process of nuclear fission? It is the process used in most nuclear power plants. It only occurs in very small atoms with low mass. It involves the splitting of an atom’s nucleus. It can occur in a chain reaction.Question 3 (Essay Worth 5 points)Describe, in detail, nuclear fission and nuclear fusion. Include what happens in each reaction, the types of atoms involved, the types of products produced, and the practical uses and limitations of each type of reaction. Question 4 (Multiple Choice Worth 3 points)Which of the following types of radiation can be shielded by a piece of paper or fabric? Alpha rays Beta rays Gamma rays Proton raysQuestion 5 (Multiple Choice Worth 3 points)A certain radioactive element has a half-life of one hour. If you start with 20.0 grams of the element at noon, how much of the radioactive element will be left at 3 p.m.? 10.0 grams 5.0 grams 2.5 grams 1.25 gramsQuestion 6 (Multiple Choice Worth 3 points)One of the greatest safety concerns associated with nuclear power plants is the emission of greenhouse gases. pollution that contributes to acid rain. disposal of radioactive by-products. change in pH of nearby bodies of water.



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3 Responses to “Chemistry help multiple choice please?”

  1. dishonest says:

    there is disagreement on ?s 1,2I agree w/ 3-6 so no value added by me discussing those.1. E –> Beta- + new element with atomic number increased by onereason charge conversation you eject an e- (by neutron converting to proton) then you have one more porton2. It only occurs in very small atoms with low mass.is NOT true; fission is large lements like U and Pu going to smaller ones

  2. orbiculatocordate says:

    1. increased by 1 (for beta- decay), decreased by 1 (for beta+ decay (your answer is probably the first one)2. only occurs in atoms with low mass3. use wiki for that4. alpha5. 2,56. disposal of radioactive by-products (but i’m not 100% sure on this one)

  3. emalfni says:

    1.When a radioactive isotope releases a beta particle, the atomic number of the new element is increased by one.2. It is the process used in most nuclear power plants.3. Nuclear fusion is the combining of molecules of low atomic weight to form a large molecule of high atomic weight. Nuclear Fission is the breaking down of molecules of high atomic weight to form many molecules of low atomic weight. Fission releases more energy than fusion but it is not easy to control.4. Alpha rays5. 2.5 gms6.. One of the greatest safety concerns associated with nuclear power plants is the disposal of radioactive by-products.