Periodic Table of Elements

Edit Answers
1234567891011121314151617181920
Across
  1. 3. number The number of protons in the nucleus of an atom.
  2. 4. metal The elements located on the right side of the zig-zag line and are poor conductors of heat and electricity
  3. 5. cloud The region around a nucleus of an atom where the electrons are located.
  4. 8. A chart that organizes information about all known elements according to their properties.
  5. 10. The smallest particle that has properties of an element.
  6. 12. property is the ability of atoms to lose electrons.
  7. 13. The elements located on the left of the zig-zag line and are good conductors of heat and electrictity.
  8. 14. The smallest unit of a compund that has all the properties of a compound.
  9. 16. An atom that has gained or lost one or more elctrons.
  10. 18. The center of an atom; made up of protons and neutrons
  11. 19. A positively charged subatomic particle in the nucleus of an atom.
  12. 20. A horizontal row of elements in the periodic table.
Down
  1. 1. A vertical column of elements in the periodic table.
  2. 2. electrons An electron that may be found in the outermost energy level of an atom.
  3. 6. Describes how an element reacts towards another element.
  4. 7. The elements that make up the zig-zag line and have properties of both metals and nonmetals.
  5. 9. A substance that cannot be broken down into a simpler substance.
  6. 11. number The total number of protons and neutrons in the nucleus of an atom.
  7. 15. level Any of the possible rings an atom may have.
  8. 17. A neutral subatomic particle in the nucleus of an atom.