The uploaded document provides a model and examples for
Nuclear Fission and
Nuclear Fusion, but it does not contain a specific question or problem to solve. It appears to be an informational handout or the "Model" section of a larger worksheet (indicated by "2/5" at the bottom).
However, based on the content provided, I can explain the key concepts and verify the equations shown to ensure you understand the material.
1. Nuclear Fission
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Definition: Fission is when a large nucleus splits into smaller pieces. This usually happens when a nucleus captures a slow-moving neutron, becoming unstable.
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Key Example from Text: Uranium-235 ($^{235}_{92}\text{U}$) absorbs a neutron ($^{1}_{0}\text{n}$) to become Uranium-236 ($^{236}_{92}\text{U}^*$), which then splits.
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Conservation Check: In nuclear reactions, the sum of mass numbers (top numbers) and atomic numbers (bottom numbers) must be equal on both sides.
* *Example Equation:* $^{235}_{92}\text{U} + ^{1}_{0}\text{n} \rightarrow ^{141}_{56}\text{Ba} + ^{92}_{36}\text{Kr} + 3^{1}_{0}\text{n}$
* *Mass Number Check:* $235 + 1 = 236$ (Left) vs. $141 + 92 + 3(1) = 236$ (Right).
Balanced.
* *Atomic Number Check:* $92 + 0 = 92$ (Left) vs. $56 + 36 + 3(0) = 92$ (Right).
Balanced.
2. Nuclear Fusion
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Definition: Fusion is when two small nuclei join together to form a larger nucleus. This requires tremendous pressure and heat.
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Key Example from Text: Deuterium ($^{2}_{1}\text{H}$) and Tritium ($^{3}_{1}\text{H}$) fuse to form Helium-4 ($^{4}_{2}\text{He}$) and a neutron ($^{1}_{0}\text{n}$).
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Conservation Check:
* *Example Equation:* $^{2}_{1}\text{H} + ^{3}_{1}\text{H} \rightarrow ^{4}_{2}\text{He} + ^{1}_{0}\text{n}$
* *Mass Number Check:* $2 + 3 = 5$ (Left) vs. $4 + 1 = 5$ (Right).
Balanced.
* *Atomic Number Check:* $1 + 1 = 2$ (Left) vs. $2 + 0 = 2$ (Right).
Balanced.
Since there is no specific question asked in the image, here is a summary of the main takeaway:
Final Answer:
The document illustrates that
Nuclear Fission involves splitting a heavy nucleus (like Uranium-235) into lighter nuclei and neutrons, while
Nuclear Fusion involves combining light nuclei (like Hydrogen isotopes) to form a heavier nucleus (like Helium). In all provided equations, both the mass numbers (superscripts) and atomic numbers (subscripts) are conserved, meaning they sum to the same total on both the reactant and product sides.
Parent Tip: Review the logic above to help your child master the concept of fission fusion worksheet.
