Chemistry Vocab #1

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Across
  1. 2. Reaction in which the nuclei of one atom combines with the nuclei of another to form a larger nuclei
  2. 3. Mass per unit of volume
  3. 4. Smallest particle of a substance that can exist by itself
  4. 6. The quality of being exact
  5. 11. Group 18 in the periodic table with a full outer shell
  6. 13. Method that expresses the number multiplied by 10 and the appropriate power
  7. 18. A science that deals with the structure and properties
  8. 20. System of electrons surrounding the nucleus of an atom
Down
  1. 1. Numerical measurements rather than its words
  2. 5. Experimental value minus the accepted value, divided by the accepted value and then multiplied by 100
  3. 7. Sum of the protons and neutrons in the nucleus of an atom
  4. 8. Atoms with same number of protons but not the same number of neutrons
  5. 9. a number that express a magnitude to a specified degree of accuracy
  6. 10. The heat required to raise the temperature of the mass of a given substance by given amount
  7. 12. atom that has gained or lost one or more electrons
  8. 14. The ability to work without mistakes
  9. 15. Data in words rather than in numbers
  10. 16. Element with the properties of both metals and nonmetals
  11. 17. A solid that is produced by a chemical reaction in solution
  12. 19. Number of protons in the nucleus in an atom