RedOx Quiz (One Chance Only)

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

What is the oxidation number of N in NO₂^1- ?

• -3
• +4
• -2
• +3

Tags

NGSS.HS-PS1-1

A chemical reaction that involves a gain/loss of electrons is called:

• Double Replacement
• Neutralization
• Oxidation-Reduction
• Hydrolysis

Tags

NGSS.HS-PS1-2

If in a reaction, copper is reduced; its number of electrons has:

• Increased
• Decreased
• Remained Constant
• Varies Randomly

Tags

NGSS.HS-PS1-2

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

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

What are oxidation numbers?

• Number of electrons in the outer most energy level
• Number of protons
• Electrons gained or lost in chemical bonding
• Number of neutrons gained or lost

Tags

NGSS.HS-PS1-2

The sum of the oxidation numbers in SCN^- is equivalent to

• 0

• -1

• +1

• +3

Which of the following represents oxidation?

• C → C^-4

• Fe³⁺ → Fe²⁺

• Cl₂ → 2Cl^-

• Zn → Zn⁺²

Which of the following represents reduction?

• C → C⁺²

• N₂ → N^-3

• Zn → Zn²⁺

• H₂ → H⁺¹