Contents
Key Stage 3
Meaning
Corrosion is when a material is worn down by chemical reactions with substances in the environment.
About Corrosion
- Rusting is a form of corrosion.
- Acid rain causes the corrosion of limestone and marble buildings and statues.
Key Stage 4
Meaning
Corrosion is when a material is worn down by chemical reactions with substances in the environment.
About Corrosion
- Corrosion is commonly caused by Water, Oxygen and Acids in the environment.
- Metals and stone (such as limestone, marble and chalk) are the most commonly corroded materials.
- More reactive metals are more easily corroded.
Examples
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| The corrosion of Iron forms brown Iron Oxide, known as rust. | The corrosion of Copper forms green Copper Carbonate. | This statue is made of Limestone which is mostly Calcium Carbonate. It is corroded by Acid Rain to form soluble salts which wash away. |