Test 2

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Across
  1. 1. variable that changes as the result of a change made to the independent variable and placed on the y-axis
  2. 6. scientists use these to take measurements and collect quantitative data
  3. 7. indicate an elements reactivity
  4. 8. the mass of an atom of a given element; measured in the unit u
  5. 10. the smallest particle into which an element can be divided and still be the same element
  6. 11. the vertical columns on the periodic table
  7. 13. all scientific investigations involve the collection of ______
  8. 14. determines the identity of an element
  9. 15. subatomic particles with no charge located in the nucleus
  10. 16. the horizontal rows on the periodic table
  11. 19. the only element in group 18 with only 2 valence electrons
  12. 20. lives in the electron cloud
Down
  1. 2. another name for the elements in group 18
  2. 3. every graph should have one
  3. 4. a bar graph with no spaces that displays frequency distribution data
  4. 5. these can be formed and broken between atoms and or ions
  5. 9. number of protons in the nucleus on an element
  6. 12. a type of graph in which data is plotted using points or dots
  7. 17. variable that is deliberately changed and placed on the x-axis
  8. 18. scientists use these to collect qualitative data