Oxidation and reduction

Redox Reactions

Oxidation,Reduction, Oxidizing and reducing agents

Multiple Choice

What substance is oxidized in the following reaction?
4Fe + 3O₂ --> 2Fe₂O₃

• Iron
• Fluorine
• Oxygen

Multiple Choice

     In the reaction Zn + H₂O --> ZnO₂ + H₂
 which element, if any, is oxidized? 

• Zinc
• Hydrogen
• Oxygen
• None

Multiple Choice

Substance that oxidizes another substance by accepting its electrons.

• reducing agent

• oxidation number

• combustion

• oxidizing agent

Multiple Choice

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

• Reduced
• Synthesized
• Oxidized
• None of the above

Multiple Choice

If an atom loses electrons during a chemical reaction, the atom was:

• Oxidized
• Reduced
• Neutralized
• Precipitated

Multiple Choice

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

• Increased

• Decreased

• Remained Constant

• Varies Randomly

Multiple Choice

In a redox reaction, the species reduced

• gains electrons and is the oxidizing agent

• loses electrons and is the oxidizing agent

• loses electrons and is the reducing agent

• gains electrons and is the reducing agent

Multiple Choice

Gaining oxygen is an example of...

• oxidation

• reduction

Multiple Choice

Gaining hydrogen is an example of...

• oxidation

• reduction

Multiple Choice

Reduction is the ___________ of electrons.

• loss

• gain

• sharing

• transfer

Multiple Choice

Oxidation is the _________ of electrons.

• loss

• gain

• sharing

• transfer

Multiple Choice

Another name for a "oxidation-reduction" reaction is

• chemical reaction
• neutralization reaction
• redox reaction
• nuclear reaction

Multiple Choice

Reduction is the ___________ of electrons.

• loss

• gain

• transfer

• share

Open Ended

Write the muddiest (most difficult or confusing) point of the lesson.

Monday, 30th November 2020          9M

Topic: Electrochemistry

Learning outcome: Define oxidation, reduction and Explain oxidizing and reducing agents (Revision)

Recap: Oxidation and reduction in general 

Main lesson : Revision through class discussion and exposition. MS board, drowboard.

Feedback : Multiple choice questions (Quizizz)

Task assigned: Watch the interactive video,attempt the questions and reinforce the topic for upcoming assessment.

Wrap up: Writing the muddiest point of the lesson (quizizz)