Elements of the Periodic Table

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Across
  1. 2. Negatively charged particles.
  2. 4. neutral particles found in the nucleus.
  3. 6. Something made up of 2 or more different elements.
  4. 7. Anything that has mass or takes up space.
  5. 9. 2 or more things combined without chemically bonding
  6. 10. Place where all the elements are arranged.
  7. 12. Positively charged particles.
Down
  1. 1. Cannot be broken down into simpler substances.
  2. 3. The vertical rows on the periodic table.
  3. 5. Where the protons and neutrons are found in an atom.
  4. 7. Two or more atoms chemically bonded together.
  5. 8. The horizontal rows on the periodic table.
  6. 11. The building blocks of matter.