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Success Criteria:
I can explain the concept of mass-energy equivalence as described by Einstein's equation E = mc2
I can identify examples of how mass can be converted into energy in nuclear reactions.
I can describe how binding energy relates to the forces holding protons and neutrons together in a nucleus.
Fun Fact
The energy produced in nuclear fusion reactions in stars, like our Sun, is a result of binding energy! When hydrogen nuclei fuse to form helium, a small amount of mass is lost and converted into a tremendous amount of energy, powering the star and providing the energy necessary for life on Earth. In fact, this process releases about 4.1 million tons of energy every second!
Key terms
Mass-Energy Equivalence: The principle that mass can be converted into energy and vice versa, encapsulated in Einstein's equation E=mc2, which states that energy (E) is equal to mass (m) multiplied by the speed of light (c) squared. .
Binding Energy: The energy required to separate the nucleons (protons and neutrons) in an atomic nucleus; it reflects the stability of the nucleus—the higher the binding energy, the more stable the nucleus.
Energy Release: The process of energy being emitted during nuclear reactions, either in the form of kinetic energy, radiation, or other forms, such as heat.
Learning Tasks
Chapter 7.1 Key Knowledge Questions p.192 of Textbook
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