Atomic numbers

4. The total weight of an element.
5. Identifies an element refers to proton number
6. More neutrons than the normal amount usually makes it radioactive
8. Releasing of a helium neuclus atoms looses 2 protons and neutrons
10. Time it takes for half of the amount of the element to decay
11. Combinding of smaller atoms to make a bigger one usually happens in stars
12. Neutron turns to proton throwing out an electron from neucleus
13. Neutrally charged, lives in the nucleus, had a mass of 1 amu
14. Positively charged,lives in the nucleus mass of 1 amu

1. The center of an atom holds protons and neutrons
2. Energy is emitted from the atom it is the most harmful
3. The emission of particles and energy some of it is harmful and not
7. Splitting of atoms usually uranium makes a lot of energy
9. a chemical reaction or other process in which the products themselves promote or spread the reaction, which under certain conditions may accelerate dramatically.