As a subject matter expert in chemistry and physics, I can explain the interaction between water and grease fire.
Water is denser than oil, so when you pour water onto a grease fire, the water sinks to the bottom. The water then rapidly turns to steam, which can cause the oil to splatter and spread the fire. Additionally, the sudden cooling effect of the water can cause the hot oil to violently react, potentially causing a fireball. This is why using water on a grease fire is dangerous and can make the situation worse.
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