Nuclear energy

3. The middle part of an atom consisting of protons and neutrons.
4. The time it takes for half of the radioactive atoms to decay.
6. Can be stopped by aluminum, is negatively charged, and is identical to a high energy electron.
7. Is stopped by skin,Cannot harm you unless it is inhaled,and is identical to a helium nucleus, also is positively charged.
10. Has no charge, around the same weight as a proton, and is inside the nucleus.
13. The act of emitting radiation spontaneously
14. Is the same as the number of protons and determines the chemical properties of an atom and tells which element.

1. Atoms are split apart and release energy(used in power plants).
2. Is emitted during the processes of an alpha particle and a beta particle,has high energy,and short wave lengths.
5. Atoms are combining,occurs on the sun, and scientists have tried to use it in nuclear power plants.
8. Has a positive charge and is the same number as the atomic number.
9. a series of events so related to each other that each one initiates the next.
11. A difference in neutrons Which causes an atoms mass to be different from what's on the periodic table.
12. The total number of protons and neutrons combined in a atom.