Periodic trends

2. verticle columns on the periodic table that share similar properties
5. very reactive non-metals that react with metal and form salts, hard to find in nature
7. law a law stating that the elements, when listed in order of their atomic numbers (originally, atomic weights), fall into recurring groups, so that elements with similar properties occur at regular interval
10. any substance that contains a high amount of eletrical and thermal conductivity. Malliable and reflective of light
11. An element that is not metal
12. Russian scientist who created the periodic table of elements
14. the chemical property of an atom that describes its ability to attract electrons towards itself
15. The total distance from the nucleus of an atom to its outermost electron
16. An atom with a positive or negative charge due to the gain or loss of electrons
17. Negatively charged ions
18. Elements that exist soley in gas form, and are non-reactive

1. Any element in the central block of the periodic table that have a strong tendancy to form coordination compounds
3. Very reactive metals found in the first collumn of the periodic table
4. Positively charged ions
6. Horizontal classifications on the periodic table, where elements on the left have lower atomic numbers and it increases as you move right and down
8. the tendancy of normal atoms to resist the loss of electrons
9. a chemical element that has properties somewhere between a typical metal and nonmental
13. Elements in which the inner shell is complete but the outer is not