Periodic Table

Edit Answers
123456789101112131415
Across
  1. 3. A horizontal row in the periodic table.
  2. 4. Refers to the amount of matter in an atom, related to atomic mass.
  3. 6. Elements that are usually gasses or brittle solids and poor conductors.
  4. 9. A vertical column in the periodic table.
  5. 11. A grid where elements are organized by atomic number.
  6. 13. The central part of an atom, containing protons and neutrons.
  7. 14. A particle in the nucleus with no electric charge.
  8. 15. A pure substance made of only one kind of atom.
Down
  1. 1. Describes something that occurs at regular intervals.
  2. 2. Elements that are typically shiny and good conductors of electricity.
  3. 5. The basic unit of a chemical element.
  4. 7. Number The number of protons in an atom's nucleus.
  5. 8. A one or two-letter abbreviation for an element.
  6. 10. A positively charged particle in the nucleus.
  7. 12. A negatively charged particle orbiting the nucleus.