Crossword

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Across
  1. 1. It is the simplest whole number ratio of a compound.
  2. 4. The measuring system that uses inches, quartz,feet, etc.
  3. 6. It is a table of all the elements, arranged by their atomic number.
  4. 8. It is the first element in the periodic table.
  5. 9. It is the rounded-off atomic weight of an element.
  6. 12. One unit of this is equal to Avogadro's number.
  7. 13. 6.022x10^23
  8. 15. He is the scientist who made "6.022x10^23"
  9. 16. It is a method of converting a unit to another unit in an organized manner.
  10. 17. It is a substance composed of two or more chemical elements.
  11. 18. It is a symbolic representation of all the elements present in a compound.
Down
  1. 2. It is the percentage of an element present in a compound.
  2. 3. The measuring system that uses meters, grams, liters, etc.
  3. 5. It is a pure substance.
  4. 7. It is the abbreviation of an element used in the periodic table.
  5. 10. It is the simplest whole-number multiple of a compound
  6. 11. It is the total atomic mass present in a compound.
  7. 13. It is the smallest unit of matter.
  8. 14. It is the average mass of an atom found in the periodic table.