Nuclear Reactions
Chemistry ⇒ Nuclear Chemistry
Nuclear Reactions starts at 10 and continues till grade 12.
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Calculate the energy released (in MeV) when 1 amu of mass is converted to energy. (Given: 1 amu = 1.6605 × 10⁻²⁷ kg, c = 3.00 × 10⁸ m/s, 1 eV = 1.602 × 10⁻¹⁹ J)
Calculate the mass defect (in amu) for a helium-4 nucleus if the mass of 2 protons is 2.0146 amu, 2 neutrons is 2.0173 amu, and the actual mass of the nucleus is 4.0026 amu.
Calculate the number of protons and neutrons in ²³⁹₉₄Pu.
Describe the difference between a controlled and an uncontrolled nuclear chain reaction.
Calculate the energy released (in MeV) when 1 amu of mass is converted to energy. (Given: 1 amu = 1.6605 × 10⁻²⁷ kg, c = 3.00 × 10⁸ m/s, 1 eV = 1.602 × 10⁻¹⁹ J)
Calculate the mass defect (in amu) for a helium-4 nucleus if the mass of 2 protons is 2.0146 amu, 2 neutrons is 2.0173 amu, and the actual mass of the nucleus is 4.0026 amu.
Calculate the number of protons and neutrons in ²³⁹₉₄Pu.
In a nuclear reaction, if the sum of the mass numbers on the left is 240 and on the right is 239, is the reaction balanced? Yes or No.
Which law is obeyed in all nuclear reactions? (1) Conservation of mass only (2) Conservation of charge only (3) Conservation of mass and energy (4) Conservation of momentum only
Which of the following best describes a chain reaction? (1) A reaction that stops after one step (2) A reaction in which the products initiate further reactions (3) A reaction that requires continuous external input (4) A reaction that occurs only in living organisms
Which of the following is a common coolant used in nuclear reactors? (1) Heavy water (2) Liquid sodium (3) Carbon dioxide (4) All of the above
Which of the following is a fusion reaction? (1) ²H + ³H → ⁴He + ¹n (2) ²³⁵U + ¹n → ¹⁴⁰Ba + ⁹³Kr + 3 ¹n (3) ¹⁴C → ¹⁴N + e⁻ (4) ²³⁸U → ²³⁴Th + ⁴He
Isotopes of an element have the same number of protons but different number of __________.
The energy released in a nuclear reaction is due to the conversion of mass into energy, as described by the equation __________.
The minimum mass of fissile material required to sustain a chain reaction is called __________ mass.
The process in which a heavy nucleus splits into two lighter nuclei with the release of energy is called __________.
In a nuclear reaction, if the sum of the mass numbers on the left is 240 and on the right is 239, is the reaction balanced? Yes or No.
In a nuclear reaction, the total charge before and after the reaction must be the same. True or False?
State whether the following statement is true or false: In a nuclear reaction, the nucleus of an atom changes, resulting in the formation of a new element.
The sum of the binding energies of the products is greater than that of the reactants in a nuclear fusion reaction. True or False?
