Chemistry

4. Opposite of a cation
5. These build all matter
6. To the left of the stair steps on the periodic table
8. Positively charged ion
9. A chart listed in order of increasing atomic numbers
10. The relatively small, dense center of positive charge in an atom
11. Except Al, all of these elements are touching the stair steps on the periodic table
12. Also called "families"
13. A molecule composed of 2 atoms
15. A group 8 element
16. These are represented by symbols
17. The number of protons in the nucleus of a given atom
21. A negatively charged subatomic particle
23. A positively charged subatomic particle located in the atomic nucleus

1. A compound that results when a metal reacts with a nonmetal to form cations and anions
2. On the right of the stair steps on the periodic table
3. Fluorine, chlorine, bromine, & iodine are all ______
7. This type of metal has multiple charges
14. The most reactive metals
18. These are represented with formulas
19. Atoms with the same number of protons but a different number of neutrons
20. A subatomic particle in the atomic nucleus with no charge
22. An atom or a group of atoms that have positive o negative charge