SPS1 Periodic Table Vocab.

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Across
  1. 3. Building block of all matter.
  2. 6. A reaction that causes atoms to bond and form new substances.
  3. 7. An arrangement of elements into rows and columns according to similarities in their properties.
  4. 9. This is a very unreactive element in Group 18 with full valence shell.
  5. 11. A subatomic particle with a positive charge
  6. 13. This is a substance that cannot be broken down further by chemical means.
  7. 14. This is a type of element or substance that is not a metal.
  8. 16. This is a column on the periodic table of elements.
  9. 17. This is a group of elements with few valence electrons that conducts heat and electricity.
  10. 19. Area outside the atomic nucleus
  11. 21. A subatomic particle with a negative charge
  12. 22. The number of protons and neutrons in the nucleus of any atom.
Down
  1. 1. These are the highly reactive elements located in Group 1
  2. 2. A horizontal row of elements in the periodic table.
  3. 3. These are the reactive elements located in Group 2 of the periodic table.
  4. 4. These elements have 7 electrons in their outer energy level
  5. 5. A subatomic particle with no charge
  6. 8. Atoms of the same element with varying number of neutrons.
  7. 10. The weighted average of all of the isotopes of an element.
  8. 12. The central part of an atom that comprises nearly all of the atomic mass and that consists of protons and neutrons.
  9. 15. This is a group of elements that have properties intermediate to metals and nonmetals.
  10. 18. A number of an element that is the number of protons in the nucleus of each atom of that element.
  11. 20. An electron in the highest occupied energy level of an atom