Skip to content
Back to quiz
6. What is the oxidation number for HYDROGEN in METAL HYDRIDES?
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?
10. What is the oxidation number for an OXYGEN ION?
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?
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?