Redox reaction

The video tutorial explains redox reactions using the example of iron oxide being reduced by carbon. It describes how iron oxide is converted to pure iron while carbon is oxidized to form carbon dioxide. The tutorial further clarifies the concepts of oxidation and reduction, highlighting that oxidation involves the loss of electrons and reduction involves the gain of electrons.

What happens to iron oxide when it reacts with carbon?

• It is oxidized to form iron.

• It is reduced to pure iron.

• It remains unchanged.

• It forms carbon monoxide.

During the reaction between iron oxide and carbon, what is formed as a result of carbon being oxidized?

• Pure carbon

• Iron carbide

• Carbon dioxide

• Carbon monoxide

In a general sense, what does oxidation involve?

• Gain of electrons

• Loss of electrons

• Sharing of electrons

• No change in electrons

Which of the following best describes reduction?

• No change in electron count

• Gain of electrons

• Loss of electrons

• Formation of carbon dioxide

What is the result of a substance gaining electrons in a chemical reaction?

• It is oxidized.

• It is reduced.

• It becomes a gas.

• It forms a new compound.