This is described by Einstein's famous equation: E=mc²
* E represents energy
* m represents mass
* c² is the speed of light squared (a very large number)
Here's how it works:
1. Mass is converted into energy: In nuclear reactions, a tiny fraction of the mass of the reactants is converted into a tremendous amount of energy.
2. Energy is released: This energy is released in various forms, such as:
* Heat: This is the most common form of energy released in nuclear reactions.
* Light: Some reactions release light in the form of gamma rays or other electromagnetic radiation.
* Kinetic energy: The products of the reaction can have high kinetic energy, meaning they move at very fast speeds.
Examples:
* Nuclear fission: The splitting of a heavy nucleus (like uranium) releases a large amount of energy.
* Nuclear fusion: The combining of light nuclei (like hydrogen) to form a heavier nucleus also releases a tremendous amount of energy.
The conversion of mass into energy explains why nuclear reactions are so powerful and why they are used in nuclear power plants and nuclear weapons.
