Chemistry Quiz on Redox Reactions and Half Equations

What is a redox reaction?

• A reaction involving only oxidation

• A reaction involving only reduction

• A reaction involving both oxidation and reduction

• A reaction that does not involve electron transfer

In the chlorine half equation, what is the charge of the chlorine ion before it becomes a normal atom?

• 2-

• 2+

• 1-

• 1+

What type of reaction is demonstrated when chlorine loses its electron?

• Reduction

• Precipitation

• Oxidation

• Neutralization

How does magnesium form an ion?

• By gaining two electrons

• By losing two electrons

• By gaining one electron

• By losing one electron

What is the charge of each oxygen ion before it becomes a normal oxygen molecule?

• 1+

• 1-

• 2+

• 2-