Acids and Bases

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Across
  1. 1. A chemical bond that involves sharing a pair of electrons between atoms in a molecule
  2. 5. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
  3. 8. A group of atoms bonded together
  4. 11. A covalent bond in which electrons are not shared equally
  5. 13. States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons
  6. 16. The amount of energy required to remove an electron from an atom
  7. 17. A negatively charged ion
  8. 18. A horizontal row of elements in the periodic table
Down
  1. 2. The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds.
  2. 3. A subatomic particle that has no charge and that is found in the nucleus of an atom
  3. 4. Formed when one or more electrons are transferred from one atom to another
  4. 6. a region of an atom in which electrons of the same energy are likely to be found
  5. 7. a covalent bond in which the electrons are shared equally by the two atoms
  6. 9. Basic unit of matter
  7. 10. a vertical column of elements in the periodic table
  8. 12. the number of protons in the nucleus of an atom of an element
  9. 14. A subatomic particle that has a negative charge
  10. 15. A positively charged ion
  11. 17. the number of protons and neutrons found in a single atom of a given element
  12. 19. A pure substance made of only one kind of atom