Science

2. The most powerful form of wave
3. bond an attraction between two or more atoms that form a chemical
6. An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable
8. occurs when a neutron slams into a larger atom, making it split into two atoms
9. The smallest particle of a substance that has all of the physical and chemical properties of that substance
11. The combined centre of the atom
14. The negative charge of an atom
15. a substance made from two or more different elements that have been chemically joined
16. The smallest part of a substance that cannot be broken down chemically
17. Not sigma
18. lone wolf

1. energy that moves from one place to another in a form that can be described as waves or particles
4. Chart of the elements
5. When two bodys of mass combine into one
7. Atoms with the same number of protons but different numbers of neutrons
10. A basic part of a whole
11. subatomic particles found inside the nucleus of every atom
12. Wearing down of something
13. a subatomic particle with a positive electric charge
19. life the time required for half of something to undergo a process