How are protons and neutrons held together in the nucleus?
A strong force that balances the repulsive forces between the protons
Covalent bonding
What is Einstein's equation E=mc² used for?
Calculate the amount of energy released during nuclear fusion and fission
Calculate the amount of radiation is given off by an isotope
What happens in nuclear fission?
A neutron splits a large and unstable nucleus, releasing more neutrons
Two atoms join together
