UNIT 14-NUCLEAR

2. the closer the number of protons is to the number of neutrons the more _____ the atom is
4. has a heavy mass, low on danger, and protection is provided by skin and paper
8. on an isotope the mass number is located at the _____
9. potential energy, meaning that mass is a form of energy
11. are atoms that are missing or have extra electrons
14. on a periodic table the mass number is located at the ______
15. fission is the system we use in _______
17. number of protons and electrons
18. number of protons plus the number of neutrons

1. protection can be provided by lead or feet of thick concrete, highly danger, and has no mass
3. have a different number of neutrons and therefore have a different mass number
5. the process of causing a larger atom to split into multiple small atoms, releasing energy in the process
6. the atomic number tells what _____ it is
7. mass number minus atomic number
10. isotopes can be written in how. many different ways
12. the farther away the number of protons is to the number of neutrons the more _____ the atoms
13. the energy source of the sun and star
16. slightly dangerous, has a high mass, and protection can be provided by glass and clothing