Chemistry Crossword Puzzle

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Across
  1. 6. the smallest unit of ordinary matter that forms a chemical element.
  2. 7. What compound has a chemical formula of CO2
  3. 10. Composed of two or more parts, elements, or ingredients
  4. 15. the identity and relative number of the chemical elements that make up any particular compound.
  5. 16. What element has a symbol of O
  6. 17. formula for a compound existing as discrete molecules that gives the total number of atoms of each element in a molecule
  7. 18. defined as the measurement system used in many countries including the United States using feet, pounds and seconds.
  8. 19. a group of two or more atoms that form the smallest identifiable unit
Down
  1. 1. What compound has a chemical formula of H2O
  2. 2. What element has a symbol of H
  3. 3. What element has a symbol of N
  4. 4. the formula that shows the ratio of elements present in the compound, but not the actual numbers of atoms found.
  5. 5. most noted for his contribution to molecular theory now known as _______'s law
  6. 7. a subdiscipline of science that deals with the study of matter and the substances that constitute it.
  7. 8. A substance that cannot be broken down into simpler substances by chemical means.
  8. 9. What element has a symbol of C
  9. 11. the average mass of atoms of an element, calculated using the relative abundance of isotopes in a naturally-occurring element
  10. 12. a system of measurement that uses the meter, liter, and gram as base units of length , capacity, and weight respectively.
  11. 13. standard unit (6.02214076 x 10^23) in chemistry for measuring large quantities of very small entities such as atoms.
  12. 14. the quantity of three-dimensional space occupied by a liquid, solid, or gas.