Vocabulary-- Week 2

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Across
  1. 3. a measure of the amount of matter
  2. 4. one of the simplest forms of matter, on periodic table
  3. 7. stationary or moving electrical charges
  4. 9. "location" electrons occupy in the electron cloud around a single atom.
  5. 12. the smallest piece of matter that is still an element
  6. 13. smaller than an atom, describes part of an atom
  7. 14. a chemical made of two or more elements
  8. 17. a chemical change rearranging substances to produce something else.
  9. 19. the science that deals with the properties, composition and structure of substances
  10. 20. a neutral particle in the middle of an atom
Down
  1. 1. substance, physical stuff things are made of
  2. 2. of or relating to atoms or the breaking of them
  3. 5. a chemical formed by two or more atoms
  4. 6. a negatively charged particle moving in a cloud around the middle of an atom
  5. 8. a compound or substance that is purified/prepared
  6. 10. a center of an atom, has most of an atom's mass
  7. 11. the SI unit of the amount of substance
  8. 15. a positively charged particle in the middle of an atom
  9. 16. of or relating to atomic nuclei, radioactivity
  10. 18. a form of an element having a specific number of neutrons