CFCs
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Chlorofluorocarbons (CFCs) are chemicals that react with and cause the destruction of stratospheric ozone. When released into the atmosphere, CFCs break down and release chlorine atoms, which then catalyze the breakdown of ozone molecules. This depletion of ozone leads to the formation of the ozone hole in the stratosphere.
This is a chemical change because the acids produced by bacteria in plaque are reacting with the minerals in the teeth, breaking them down and causing decay.
Destruction by fire refers to the process of causing damage or ruin by setting objects, buildings, or landscapes ablaze. It is a method of destroying property or causing harm through the use of flames and heat.
When a metal corrodes, it reacts with a chemical in the environment to produce a new substance. Often the metal reacts with oxygen to form a metal oxide. A well-known example is iron reacting with oxygen to form iron oxide, known as rust.
Chemical corrosion is the process of deterioration or destruction of a material due to a chemical reaction with its environment, leading to the loss of the material's properties or functionality. This often occurs when a material comes into contact with substances such as acids, bases, or salts, causing it to degrade over time.
The ozone present in the stratospheric region of atmosphere filters our cancer causing rays from the sun. This ozone is present in the form of ozone layer.