Periodic Table of Elements

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Across
  1. 4. Horizontal row in the periodic table that shows energy levels
  2. 8. A chemical bond formed between two ions with opposite charges.
  3. 9. A positively charged particle found in the nucleus of an atom.
  4. 11. The result when you change the number of neutrons in an element
  5. 14. A pure substance made up of only one type of atom.
  6. 15. A group of atoms bonded together.
  7. 17. Electrons in the outermost shell of an atom that are involved in bonding.
Down
  1. 1. A chemical bond where atoms share electrons
  2. 2. vertical column in the periodic table where elements share similar properties
  3. 3. A neutrally charged particle found in the nucleus of an atom.
  4. 5. The number of Protons in an atom’s nucleus
  5. 6. The result when you change the number of electrons in an atom
  6. 7. A substance made of two or more elements chemically combined
  7. 10. The basic unit of matter, consisting of protons, neutrons, and electrons.
  8. 12. A negatively charged particle that orbits the nucleus of an atom.
  9. 13. A letter abbreviation for an element’s name
  10. 16. The center of an atom, containing protons and neutrons.