Periodic Table Crossword

4. An element that tends to be shiny, easily shaped, and a good conductor of electricity and heat.
6. one of the most reactive families on the periodic table, group 7.
7. A table of the elements arranged by the atomic number, that shows the pattern in their properties.
8. Likely to undergo chemical change.
10. The number of protons in the nucleus of an atom.
13. An atom or group of atoms that has a positive or negative electric charge.
16. one of the most reactive families on the periodic table, group 1.
18. A particle that has no electric charge and is located in an atom's nucleus.
19. The shortened Latin name of an element, how it is identified on the periodic table.
20. An element that is not a metal and has properties generally opposite to a metal.

1. A positively charged particle in an atom's nucleus.
2. A vertical column in the periodic table of elements.
3. Valence electrons are on the _______ shell.
5. The process by which the nucleus of an atom of an element releases energy and particles.
9. A negatively charged particle found outside an atom's nucleus.
11. An element that has properties of both a metal and a nonmetal.
12. What family of elements on the periodic table are stable with full valences?
14. The central region of an atom where most of the atom's mass is found in protons and neutrons.
15. A horizontal row in the periodic table of elements.
17. The averages of an atom's isotopes.