science

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Across
  1. 3. the attraction between oppositely charged ions
  2. 6. a chemical bond formed when two atoms share electrons
  3. 8. a combination of symbols that represents the elements in a compound
  4. 10. an orderly, three-dimensional pattern of ions or atoms in a solid
  5. 12. a compound that consists of positive and negative ions
  6. 14. a covalent bond in which electrons are shared unequally
  7. 15. a compound that is composed of molecules
Down
  1. 1. an ion that is made of more than one atom
  2. 2. an atom or group of atoms that has been electrically charged
  3. 4. a number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
  4. 5. a covalent bond in which electrons are shared equally
  5. 7. a material of two or more elements that has the properties of a metal
  6. 9. a neutral particle made of two or more atoms joined by covalent bonds
  7. 11. a chemical bond formed when atoms share three pairs of electrons
  8. 13. a chemical bond formed when atoms share two pairs of electrons