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Depending upon what type of extinguisher, there may be both.
When water is used, it is a physical change, as water is converted to steam and the heat is removed from the fire.
When a dry chemical is used, it is a physical change as the powder cools the fire, but also a chemical change that affects the speed of combustion.
A foam-type extinguisher physically cools the fire but, more importantly, establishes a chemical layer of oxygen-starved foam on the surface of flaming liquids.
A CO2 extinguisher cools a fire (at minus 130 F), but also pushes out the oxygen-rich air and replaces it with CO2 gas, which does not burn well at normal temperatures.
For a Class D extinguisher, related to flammable metals, it is typically a chemical change that converts the surface of the burning metal to something inert.
Similarly, a Class K (or F) kitchen extinguisher converts the surface of burning vegetable oils to a soapy substance that no longer burns.
What else can I help you with?
Does evaporation cause a physical change or a chemical change?
It is physical change
Is a toast a chemical or physical change?
Chemical
Is melting snow into water chemical or physical change?
physical, because there is no chemical reaction to cause the change. it's just heat.
Is mixing baking soda and vinegar a chemical or physical change?
Mixing flour and baking soda is a physical change; the process of mixing them together does not in itself cause them to change into any other chemical. However, when the pastry is baked, then there will be chemical changes.
Is bread toasted a physical or chemical change?
Physical cause it is still bread
Is flettening a chemical change?
No, flattening is a physical change, not a chemical change. A chemical change involves a change in the chemical composition of a substance, whereas flattening simply changes the shape or appearance of the object.
Can a chemical change cause physical change?
Yes, it can. Example: heating up,
Can a physical change cause a chemical change?
Yes, it can. Example: heating up,
How a temperature change is not a chemical change?
Change in temperature is not a chemical change rather it is a physical change because it does not cause any change in composition or chemical properties of matter.
Does adding vinegar to milk saw that milk so that the milk will curdle cause a physical change wilco don't cause a physical change?
This is a chemical change.
Did a chemical change or a physical change cause in a crushed cans appearance?
this queston is stupid
Is being resistant to corrosion a physical or chemical change?
Being resistant to corrosion is a physical property of a material, not a physical or chemical change. It means that the material does not undergo chemical reactions with its environment that would cause it to deteriorate over time.
