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- 1. Multiple ChoiceWhat is the oxidation number of Fe in FeO?+1-1+2-2
- 2. Multiple ChoiceWhat is the oxidation number of O in CO2?+2-1+4-2
- 3. Multiple ChoiceWhat is the oxidation number of N in NO21- ?-3+4-2+3
- 4. Multiple ChoiceIdentify the reaction type:
C2H5OH(l) + O2(g) --> CO2(g) + H2O(g)Double displacementSynthesisAcid baseCombustion - 5. Multiple ChoiceA chemical reaction that involves a gain/loss of electrons is called:Double ReplacementNeutralizationOxidation-ReductionHydrolysis
- 6. Multiple ChoiceIf in a reaction, copper is reduced; its number of electrons has:IncreasedDecreasedRemained ConstantVaries Randomly
- 7. Multiple ChoiceIf an atom loses electrons during a chemical reaction, the atom was:OxidizedReducedNeutralizedPrecipitated
- 8. Multiple ChoiceThe sum of all oxidation numbers in a neutral compound is ___.01-1depends on the compound
- 9. Multiple ChoiceWhich of the following compounds is NOT an ionic compound?NaClNH3Fe2O3HCl
- 10. Multiple ChoiceWhat is the oxidation of C in CH4?-4-1+4+1
- 11. Multiple ChoiceWhat element's don't have oxidation numbers?alkali metalsnoble gaseshalogensalkaline earth metals
- 12. Multiple ChoiceWhat is oxidation number of Mn in MnO2 ?0+2-2+4
- 13. Multiple ChoiceWhat is the oxidation number of Ca in Ca3N2?+3+2-3-2
- 14. Multiple ChoiceWhat is the oxidation number of S in SO4 2- ?-2+2+6-4
- 15. Multiple ChoiceWhat is oxidation number of Cr in
Cr2O72-?-2+2+6+12 - 16. Multiple ChoiceWhat is oxidation number of P in K3PO4?+1+5-20
- 17. Multiple ChoiceWhat are oxidation numbers?Number of electrons in the outer most energy levelNumber of protonsElectrons gained or lost in chemical bondingNumber of neutrons gained or lost
- 18. Multiple ChoiceWhat are oxidation numbers?Number of electrons in the outer most energy levelNumber of protonsElectrons gained or lost in chemical bondingNumber of neutrons gained or lost
- 19. Multiple ChoiceWhat are valence electrons?Number of electrons in the outer most energy levelNumber of electrons gained or lostNumber of electrons in the inner energy levelNumber of electrons
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