Periodic Table

3. describes how likely an element is to form bonds with other elements.
4. an element that does not conduct electricity or heat and is usually a gas at room temperature.
7. elements and/or compounds that when put together are unable to react chemically.
8. Group 17 nonmetals on the periodic table that contain 7 valence electrons.
9. Ionization Energy, The energy required to remove an electron from the outermost energy level (valence electron)
11. Number, the number of protons contained in each nucleus of its atoms of the element.
12. a substance that cannot be broken down into a simpler substance by ordinary chemical means.
14. an atom that has gained or lost one or more electrons.
16. The attraction a nucleus has for electrons in a chemical bond.
19. an element or substance that conducts heat and electricity.
20. Earth Metals, Group 1 metals on the periodic table that contain 2 valence electrons

1. Electrons, electrons that are located in the outermost energy level of an atom.
2. a vertical column (up and down) on the periodic table.
5. Metals, Group 312 on the periodic table.
6. Radius, The distance between the nucleus of an atom and it's outermost energy level (valence shell).
10. Mass, the number of protons and neutrons in the nucleus of one atom of the element.
11. the smallest unit of an element that has all of the properties of the element;
13. Charge, The charge of an atoms nucleus resulting from it's number of protons.
15. a horizontal row (left to right) in the periodic table.
17. Metals, Group 1 metals on the periodic table that contain 1 valence electron
18. an element that has some properties of a metal and some properties of a nonmetal.