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Topic 12: Nuclear Chemistry
12. Fission and Fusion - Nuclear energy: Recalling concept facts and definitions
1. Which statement best describes what happens in a fission reaction?
1) Light nuclei join to form heavier nuclei
3) Energy is converted to mass
2) Heavy nuclei split into lighter nuclei 4) Electron is converted to energy
2. What is the primary result of a fission reaction? 3) Binding together of two heavy nuclei
1) Conversion of mass to energy
2) Conversion of energy to mass 4) Binding together of two lighter nuclei
3. Compared to ordinary chemical reaction, a fission reaction will
1) Absorb smaller amount of energy
3) Release smaller amount of energy
2) Absorb larger amount of energy 4) Release larger amount of energy
4. Which best describes what occurs in a fusion reaction?
Teacher Preview Copy
Teacher Preview Copy
1) Light nuclei join to form heavier nuclei 3) Energy is converted to mass
2) Heavy nuclei split into lighter nuclei 4) Electron is converted to energy
5. The energy released during fusion is converted from
1) Electrons 3) Mass
2) Nuclei 4) Gamma
6. A fission reaction is similar to a fusion reaction in that both reactions involve
1) Collision between nuclei of high atomic number 3) The conversion of energy to mass
2) Collision between nuclei of low atomic number 4) The conversion of mass to energy
7. Compared to fission reaction, a fusion reaction will
1) Release larger amount of energy 3) Absorb larger amount of energy
2) Release smaller amount of energy 4) Absorb smaller amount of energy
8. Which conditions are required for a fusion reaction to take place?
1) Low pressure and low temperature 3) Low pressure and high temperature
2) High pressure and low temperature 4) High pressure and high temperature
9. The fusion of hydrogen nuclei can be initiated by a fission reaction because the fission reaction
provides a
1) High temperature and high pressure 3) Good supply of hydrogen nuclei
2) High temperature and low pressure 4) Good supply of neutrons
10. Which statement explains why fusion reactions are difficult to start?
1) Positive nuclei attract each other 3) Negative nuclei attract each other
2) Positive nuclei repel each other 4) Negative nuclei repel each other
11. A nuclear fission reaction and a nuclear fusion reaction are both similar because both reactions
1) Form heavy nuclides from light nuclides 3) Release large amount of energy
2) Form light nuclides from heavy nuclides 4) Absorbed a large amount of energy
12. One benefit of nuclear fission reaction is
1) Nuclear reaction meltdowns 3) Biological exposure
2) Storage of waste materials 4) Production of energy
13. The amount of energy released from a fission reaction is much greater than the energy from a
chemical reaction because in a fission reaction
1) Energy is converted to mass 3) Mass is converted to energy
2) Ionic bonds are broken 4) Covalent bonds are broken
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 345
Topic 12: Nuclear Chemistry
12. Fission and Fusion - Nuclear energy: Recalling concept facts and definitions
1. Which statement best describes what happens in a fission reaction?
1) Light nuclei join to form heavier nuclei
3) Energy is converted to mass
2) Heavy nuclei split into lighter nuclei 4) Electron is converted to energy
2. What is the primary result of a fission reaction? 3) Binding together of two heavy nuclei
1) Conversion of mass to energy
2) Conversion of energy to mass 4) Binding together of two lighter nuclei
3. Compared to ordinary chemical reaction, a fission reaction will
1) Absorb smaller amount of energy
3) Release smaller amount of energy
2) Absorb larger amount of energy 4) Release larger amount of energy
4. Which best describes what occurs in a fusion reaction?
Teacher Preview Copy
Teacher Preview Copy
1) Light nuclei join to form heavier nuclei 3) Energy is converted to mass
2) Heavy nuclei split into lighter nuclei 4) Electron is converted to energy
5. The energy released during fusion is converted from
1) Electrons 3) Mass
2) Nuclei 4) Gamma
6. A fission reaction is similar to a fusion reaction in that both reactions involve
1) Collision between nuclei of high atomic number 3) The conversion of energy to mass
2) Collision between nuclei of low atomic number 4) The conversion of mass to energy
7. Compared to fission reaction, a fusion reaction will
1) Release larger amount of energy 3) Absorb larger amount of energy
2) Release smaller amount of energy 4) Absorb smaller amount of energy
8. Which conditions are required for a fusion reaction to take place?
1) Low pressure and low temperature 3) Low pressure and high temperature
2) High pressure and low temperature 4) High pressure and high temperature
9. The fusion of hydrogen nuclei can be initiated by a fission reaction because the fission reaction
provides a
1) High temperature and high pressure 3) Good supply of hydrogen nuclei
2) High temperature and low pressure 4) Good supply of neutrons
10. Which statement explains why fusion reactions are difficult to start?
1) Positive nuclei attract each other 3) Negative nuclei attract each other
2) Positive nuclei repel each other 4) Negative nuclei repel each other
11. A nuclear fission reaction and a nuclear fusion reaction are both similar because both reactions
1) Form heavy nuclides from light nuclides 3) Release large amount of energy
2) Form light nuclides from heavy nuclides 4) Absorbed a large amount of energy
12. One benefit of nuclear fission reaction is
1) Nuclear reaction meltdowns 3) Biological exposure
2) Storage of waste materials 4) Production of energy
13. The amount of energy released from a fission reaction is much greater than the energy from a
chemical reaction because in a fission reaction
1) Energy is converted to mass 3) Mass is converted to energy
2) Ionic bonds are broken 4) Covalent bonds are broken
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 345
