Advanced Chemisty PETA 4

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Across
  1. 5. density is equal to mass over _ _ _ _ _ _
  2. 6. is any substance composed of at least two atoms
  3. 12. is the formula that shows the number of each atom of each type in a molecule
  4. 14. the collection of units usually used in business and industries in the United States, but not in scientific works
  5. 15. the SI unit for length
  6. 17. mass, the combined atomic masses of each element in a compound
  7. 18. there are _ _ _ _ steps to calculate molar mass of a compound.
  8. 19. the prefix for values multiplied by 10^18
  9. 20. the first name of the scientist who proposed Avogadro's number
Down
  1. 1. International, SI stands for ______________________
  2. 2. the system utilized by scientists and most countries for their measurements
  3. 3. the SI scale for temperature
  4. 4. the number of atoms in a compound is determined by its _ _ _ _ _ _ _ _ _
  5. 7. is the molecular formula for table salt
  6. 8. composition, this tells you by mass the percent of each element present in a compound
  7. 9. is the formula with the simplest ratio of atoms in a compound
  8. 10. the unit of measurement used when calculating for molar mass (hint: there is a special character)
  9. 11. the SI unit for mass
  10. 13. the scale for temperature that is also called the centigrade
  11. 16. the standard scientific unit for measuring large quantities of small entities is called the _ _ _ _