CAE1: Crossword Extra Credit (CH)

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Across
  1. 2. The number 4000.0 has how many significant figures?
  2. 4. _________ properties depend on how much material is present.
  3. 7. (two words, no space) This number from the periodic table is the average mass of an atom of that element.
  4. 8. The positively-charged subatomic particle that weighs 1 amu.
  5. 9. Paper burning is an example of a ________ change.
  6. 11. The different types of matter, found on the Periodic Table.
  7. 13. The smallest amount of an element that you can have.
  8. 15. The subatomic particle with neutral (0) charge.
  9. 18. 6.02*10^23 is known as ________'s Number.
  10. 19. The location of the protons and neutrons in the atom.
  11. 21. This important unit for Chemistry is equal to 6.02*10^23 atoms/molecules/etc.
  12. 22. When two molecules with the same formula (recipe) but different structures.
Down
  1. 1. Ice melting into water is an example of a ________ change.
  2. 3. _________ properties do NOT depend on how much material is present.
  3. 5. The negatively-charged subatomic particle that weighs basically 0 amu.
  4. 6. (two words, no space) This number from the periodic table is the number of grams one mole of that element weighs.
  5. 10. An atom with non-zero net charge (so, a different number of protons and electrons).
  6. 12. Anything that takes up space and has mass.
  7. 14. A way of classifying atoms based on the number of neutrons (usually, by writing the Mass Number).
  8. 16. The number 0.0030 has how many significant figures?
  9. 17. (two words, no space) This number, usually given as the name of an isotope, is the total number of protons + neutrons.
  10. 20. (two words, no space) This number from the periodic table tells you how many protons are in an atom of that element.