As a subject matter expert in chemistry and safety, I can explain the process of how baking soda extinguishes a grease fire.

When a grease fire occurs, it's crucial to use the right extinguishing agent because water is not suitable due to the risk of spreading the fire through the油锅 (hot oil). Baking soda, or sodium bicarbonate, is often recommended for small grease fires because of its chemical properties.

Here's how it works:


1. Chemical Reaction: Baking soda is a base, and when it's heated, it undergoes a chemical reaction that produces sodium carbonate, water, and carbon dioxide gas.


2. Smothering: The carbon dioxide gas that's produced helps to smother the fire by displacing the oxygen around the fire. Without oxygen, the fire can't sustain itself and begins to die out.


3. Cooling Effect: The water vapor generated during the reaction also has a cooling effect, which can help to lower the temperature of the oil and further reduce the risk of combustion.


4. Non-Combustible: Baking soda is non-combustible, so it doesn't add fuel to the fire.


5. Absorbs Excess Oil: Baking soda can also help to absorb some of the excess oil, which can prevent the oil from splattering and spreading the fire.

It's important to note that while baking soda can be effective for small grease fires, it's not suitable for larger fires. In such cases, a fire extinguisher rated for kitchen fires (Class K) or calling the fire department is the best course of action.

Always remember, safety first. Never pour water on a grease fire, and always keep a fire extinguisher in your kitchen.

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Use a metal lid since glass will shatter. Pour on Baking Soda - Baking soda will extinguish grease fires, but only if they're small. It takes a lot of baking soda to do the job. Spray the Pot with a Class B Dry Chemical Fire Extinguisher - This is your last resort, as fire extinguishers will contaminate your kitchen.read more >>