Chemistry

1. Neutrons being converted into protons occurs in ______ decay.
3. The particle that is released in radioactive decay which is identical to a helium nucleus.
8. Generally found on the right side of the periodic table.
10. A collection of atoms or molecules of the same kind.
11. The horizontal rows of the periodic table.
12. Subatomic particle with a positive charge.
13. The outer shell electrons that can participate in chemical bonding.
14. Found in Group 6 Period 3.
15. 2 or more elements chemically combined.
16. A charged particle.
17. Variants of a particular chemical element which differ in neutron number.
18. Subatomic particle with no charge.
21. Name of the group of gasses that are the most stable due to having the maximum amount of valence electrons their outer shell can hold.

2. The smallest constituent unit of ordinary matter that has the properties of a chemical element.
4. The most abundant element in the universe.
5. Generally found on the left side of the periodic table.
6. 2 or more atoms chemically joined together.
7. If an atom has an unstable nucleus it is __________.
9. Subatomic particle with a negative charge.
19. Element with atomic number 8.
20. The vertical columns of the periodic table.