Chemistry Crossword Crossing

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Across
  1. 5. Neutral group of atoms held by covalent bonds
  2. 7. Covalent bond sharing two electron pairs
  3. 8. Ordered 3D arrangement of ions
  4. 9. Substance formed when two or more elements are chemically bonded
  5. 12. Covalent bond sharing one electron pair
  6. 13. Anything that has mass and takes up space
  7. 15. Distinct forms of matter like solid, liquid, gas
  8. 18. Characteristic describing ability to undergo chemical change
  9. 20. The basic unit of a chemical element
  10. 21. Atom or molecule with a net electric charge
  11. 22. Attraction or repulsion between charges
  12. 23. A positively charged ion
Down
  1. 1. Atoms aim for eight valence electrons
  2. 2. Molecule made of only two atoms
  3. 3. Covalent bond sharing three electron pairs
  4. 4. Characteristic observed without changing identity
  5. 6. Bond from electrostatic attraction of ions
  6. 9. Bond involving shared electron pairs
  7. 10. Substance with two or more components not chemically bonded
  8. 11. Outermost electrons involved in bonding
  9. 14. A pure substance made of only one type of atom
  10. 16. Simplest ratio of ions in ionic compound
  11. 17. Covalent bond with unequal electron sharing
  12. 19. A negatively charged ion