Chemistry 1 Unit 1 Vocabulary

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