Scientific Words Crossword

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Across
  1. 5. Atoms of the same element with different numbers of neutrons.
  2. 6. The sum of protons and neutrons in an atom’s nucleus.
  3. 11. Made up of Protons, Neutrons, and Electrons.
  4. 12. The force-carrying particle that holds quarks together in protons and neutrons.
  5. 14. A negatively charged subatomic particle that orbits the nucleus.
  6. 15. The region around the nucleus where electrons are likely to be found.
  7. 18. A positively charged subatomic particle found in the nucleus.
  8. 19. The antimatter counterpart of an electron with a positive charge.
  9. 20. Electrons in the outermost energy level, important in bonding.
Down
  1. 1. A division within an energy level, consisting of orbitals (s, p, d, f).
  2. 2. A measure of an atom’s ability to attract electrons.
  3. 3. The number of protons in an atom, defining the element.
  4. 4. A region where an electron is likely to be found within an atom.
  5. 7. A one- or two-letter abbreviation representing an element.
  6. 8. The centre of an Atom.
  7. 9. An atom or molecule with a net charge due to the loss or gain of electrons.
  8. 10. A fundamental particle that makes up protons and neutrons.
  9. 13. The strong force that holds protons and neutrons together in the nucleus.
  10. 16. A collective term for protons and neutrons in the nucleus.
  11. 17. A neutral subatomic particle found in the nucleus.