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6. What is the oxidation number for HYDROGEN in METAL HYDRIDES?

  • -1
  • +1
  • 0

7. What is a REDUCING AGENT?

  • Donates electrons
  • Gains electrons

8. What happens to oxidation number during REDUCTION?

  • Decreases
  • Increases
  • Stays the same

9. What is the oxidation number for a HYDROGEN ION?

  • +1
  • 0
  • -1

10. What is the oxidation number for an OXYGEN ION?

  • +2
  • -1
  • -2
  • 0

11. What is the oxidation number for a simple MONOTOMIC ION?

  • -1
  • 0
  • Same as its charge
  • +1

12. What is the formula for COPPER (I) OXIDE?

  • Cu2O
  • Cu2O2
  • CuO
  • CuO2

13. What can happen to an atom during an OXIDATION REACTION

  • loss of electrons, loss of hydrogen and gain of oxygen
  • gain of electrons, gain of hydrogen and loss of oxygen
  • gain of electrons, loss of hydrogen and gain of oxygen

14. What are Roman numerals used to indicate?

  • The number of moles of that element
  • The oxidation number of the element or compound
  • The number of atoms of that element present

15. What is the oxidation number for an element BONDED TO ITSELF?

  • -1
  • 0
  • +1