study

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Across
  1. 2. which group on the periodic table has 6 valence electrons
  2. 6. what is the formula for decomposition
  3. 8. what is the difference between a chemical reaction and a nuclear reaction
  4. 9. what is the formula for oxidation
  5. 10. what is the most dangerous type of ray?
  6. 12. which element on the periodic table has a mass of 1
  7. 13. what is the formula for single replacement
  8. 14. when the atom becomes more negative do the amount of electrons increase or decrease
  9. 15. what are the 5 covalent bonds
Down
  1. 1. what is contained in the nucleus of an atom
  2. 3. when the atom becomes less negative do the amount of electrons increase or decrease
  3. 4. what is the formula for synthesis
  4. 5. which group on the periodic table has 8 valence electrons
  5. 7. what is the formula for double replacement
  6. 11. which group in the periodic table has 1 valence electron