states of matter

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Across
  1. 4. a solid material that is typically hard and shiny
  2. 5. is a bond formed when many metal atoms share their polled valence electrons
  3. 7. are electrons in the outer shell level of atom
  4. 8. is an atom that is no longer electrically neutral because it has lose or gain valence electron
  5. 11. The central part of an object
  6. 12. A chemical element that lacks the characteristic properties of a metal
  7. 13. smallest unit of matter that still represents an element
  8. 16. a molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons
  9. 18. number Number of protons in an element
Down
  1. 1. is a force that holds two or more atoms together valence electrons are either shared or transferred
  2. 2. A partial chemical element that have the same number of protons and electrons
  3. 3. matter that consists of one type of atom
  4. 6. The attraction between positively and negatively charged ions in a ionic compound
  5. 9. is a group of atoms held together by covalent bonding that acts as an independent unit
  6. 10. a model that represents valence electrons in an atom as dots around the elements chemical bond
  7. 14. is a chemical bond formed when two atoms share one or more pairs of valence
  8. 15. an element whose properties are between a metal and non metal
  9. 17. is a group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound