Lesson Topics

1 | Oxidation

2 | Combustion

3 | Combustion of Hydrocarbons

4 | Aerobic Respiration

5 | Combustion of Metals and Non-Metals

6 | Corrosion

7 | Preventing Corrosion

8 | Summary

Lesson Summary

• Chemical reactions that involve a substance reacting with oxygen are known as oxidation reactions.

• Oxidation reactions release energy.

• Combustion is an oxidation reaction that involves the production of heat and light in the form of a flame.

• Combustion is also referred to as burning and the substance that reacts with oxygen is referred to as a fuel.

• Fuels contain stored energy that is rapidly released when they are burned.

• Fuels include carbon compounds, such as hydrocarbons, as well as some metals and some non-metals.

• Combustion of hydrocarbons can be described as complete or incomplete, depending on the supply of oxygen and the products formed.

• Complete combustion occurs when oxygen is not limited. It produces carbon dioxide and water:

• Incomplete combustion occurs when oxygen is limited. It produces either carbon monoxide and water or carbon and water:

• Aerobic respiration is the reaction of glucose with oxygen that takes place in the cells of living things, providing them with energy.

• It can be considered as a slow, controlled form of combustion as it involves the oxidation of a carbon compound to produce carbon dioxide and water:

• Combustion of metals produces a metal oxide:

• Combustion of non-metals produces a non-metal oxide:

• Corrosion is the slow oxidation of a metal. It produces a metal oxide:

• Corrosion can be prevented by physical barriers that prevent the exposure of metals to air, water and other substances.

• Methods used to prevent corrosion include:

• Anodising

• Electroplating

• Galvanising

• Protective coatings, such as plastic, paint, grease and oil.

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