Oxidation Numbers

What is the oxidation number of Fe in FeO?

• +1
• -1
• +2
• -2

Tags

NGSS.HS-PS1-2

What is the oxidation number of O in CO₂?

• +2
• -1
• +4
• -2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify the reaction type:
C₂H₅OH(l) + O₂(g) --> CO₂(g) + H₂O_(g)

• Double displacement
• Synthesis
• Acid base
• Combustion

The sum of all oxidation numbers in a neutral compound is ___.

• 0
• 1
• -1
• depends on the compound

What is oxidation number of Mn in MnO₂ ?

• 0
• +2
• -2
• +4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the oxidation number of Ca in Ca₃N₂?

• +3
• +2
• -3
• -2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is oxidation number of P in K₃PO₄?

• +1
• +5
• -2
• 0

Tags

NGSS.HS-PS1-1

What are valence electrons?

• Number of electrons in the outer most energy level
• Number of electrons gained or lost
• Number of electrons in the inner energy level
• Number of electrons 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the oxidation state of Pb in PbO ?

• +2

• +4

• 0

• -2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Oxidation number of O in the compound H₂O:

• 0

• -1

• -2

• +2