Vocabulary Words Created By: Christin Yeates

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Across
  1. 3. cloud- model that shows electrons traveling in specific energy levels around the nucleus
  2. 5. Number- the number of protons in an atoms
  3. 7. has a definite shape and volume
  4. 9. mass per unit volume
  5. 11. located in the center of an atom
  6. 12. matter that is composed of one type of atom
  7. 14. the smallest piece of matter that still has the properties of the element
  8. 15. a group of atoms bonded together
  9. 17. Mass- composed mostly of protons and neutrons in the nucleus- also called mass number
  10. 19. negatively charged particles in the shells
Down
  1. 1. Danish physicist who made foundational contributions to understanding atomic structure and quantum theory
  2. 2. table- a tabular display of the chemical elements
  3. 4. a coherent, typically large body of matter with no definite shape.
  4. 6. he created a farsighted version of the periodic table of elements.
  5. 8. no definite shape or volume
  6. 10. neutrally charged particles in the nucleus
  7. 13. positively charged particle in the nucleus
  8. 16. no definite shape and has a definite volume
  9. 18. a thing that is composed of two or more separate elements