atom and matter

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Across
  1. 3. electrical property that determines whether the object is positive, negative, or neutral
  2. 4. anything that takes up space
  3. 5. region surrounding a atom nucleus were one or more electrons are likely to be found
  4. 7. small particle that is the building block of matter
  5. 8. single; septet
  6. 10. a substance made of only one kind of atom
  7. 12. a mixture in which two or more substance are evenly mixed but not bonded together
Down
  1. 1. matter with a composition that is always the same
  2. 2. two or more atoms that are held together by chemical bonds and act as a unit
  3. 3. substance made of two or more elements that are chemically joined in a specific combination
  4. 6. a change in matter in which the substance that makes up the matter changes into other substances with different chemical and physical properties
  5. 7. the number of protons in the nucleus of an atom of an element
  6. 9. negative charge particle that occupies the space in an atom outside the nucleus
  7. 11. matter that can vary in composition