Criss Cross Vocab

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Across
  1. 5. A positively charged ion
  2. 8. The number of protons in an atom's nucleus
  3. 9. Atoms of the same element that have different numbers of neutrons
  4. 11. A phase that has a definite volume but takes the shape of its container
  5. 12. A measure of the average kinetic energy of all the particles in an object
  6. 15. Mass per unit volume of a material
  7. 16. Matter consisting of positively and negatively charged particles
  8. 17. Vertical row in the periodic table
  9. 18. The area around the nucleus of an atom where the electrons are found
Down
  1. 1. An equal amount of charge or particles
  2. 2. Elements in Group 18 on the periodic table
  3. 3. The temperature at which the liquid becomes a gas
  4. 4. A force that holds atoms together in a compound
  5. 6. Amount of matter in an object
  6. 7. A negatively charged ion
  7. 10. Positive or negative number
  8. 13. The temperature at which a solid becomes a liquid
  9. 14. Elements in Group 17 on the periodic table