Redox Reactions

Defined as the loss of electrons.

• oxidation

• reduction

• redox

• OIL RIG

Defined as the gain of electrons.

• oxidation

• redox

• reduction

• LEO GER

An increase in oxidation number.

• more acidic

• reduction

• less basic

• oxidation

A decrease in oxidation number.

• concentrated

• reduction

• oxidation

• dilute

What is the oxidation number of C in SrCO₃?

• -4

• +2

• -6

• +4

What is the oxidation number of Cr in Cr₂O₇^2- ?

• +14

• +6

• -6

• -14

Substance that oxidizes another substance by accepting its electrons.

• reducing agent

• oxidation number

• combustion

• oxidizing agent

Substance that reduces another substance by losing electrons.

• reducing agent

• half-reaction

• electronegative atom

• oxidizing agent

Is calcium oxidized or reduced in the following reaction? 
2CaO--> 2Ca + O₂

• Oxidized
• Reduced

In the reaction
2Ca(s) + O₂(g) --> 2CaO(s), calcium is __________

• Reduced
• Synthesized
• Oxidized
• None of the above