Chapter 2

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Across
  1. 8. positively charged particle in the nucleus
  2. 13. uncharged particle in the nucleus
  3. 14. positively charged ion
  4. 15. chemical reaction in which bonds are broken to produce smaller parts
  5. 16. the total number of protons and neutrons in the nucleus
  6. 17. negatively charged ion
  7. 19. attractive force between atoms forming a molecule
  8. 20. chemical bond in which the electrons of one atom are shared with another
  9. 21. part of the atom consisting of protons and neutrons
Down
  1. 1. a bond between a hydrogen atom covalently bonded to oxygen or nitrogen and another O or N
  2. 2. chemical reaction that has both synthesis and decomposition components
  3. 3. chemical reaction in which two or more atoms combine to form a new larger molecule
  4. 4. sum of the atomic weights of all atoms in a molecule
  5. 5. Arrangement of electrons in shells or energy levels in an atom
  6. 6. the number of protons in the nucleus
  7. 7. a form of chemical element in which the number of neutrons is different from other of the same element
  8. 9. - a combination of atoms forming a specific chemical compound
  9. 10. negatively charged particle in motion around the nucleus
  10. 11. Smallest unit of matter that can enter into a chemical reaction
  11. 12. negatively charged atom or group of atoms
  12. 18. the combining capacity of an atom or a molecule