Chapter 5 Vocabulary Terms

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Across
  1. 3. two or more atoms that are held together by chemical bonds and act as a unit
  2. 4. one of two or more atoms of an element having the same number of protons but a different number of neutrons
  3. 6. uncharged particle in the nucleus of an atom
  4. 7. number the number of protons in the nucleus of an atom of an element
  5. 9. substance made of two or more elements that are chemically joined in a specific combination
  6. 10. positively charged particle
  7. 11. electrical property of some objects that determines whether the object is +, - or neutral
  8. 13. atom that has a charge because it has gained or lost electrons
Down
  1. 1. substance made of only one kind of atom
  2. 2. negatively charged particle
  3. 3. matter that can vary in composition
  4. 5. matter with a composition that is always the same
  5. 6. region at the center of an atom
  6. 8. anything that has mass and takes up space
  7. 12. small particle that is the building block of matter