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Several things: First, what are you trying to boil? Different solutions have different boiling points based on their chemical composition. If you mean water, you can drop the boiling point by adding solutes to the water (salt, sugar, etc). Also, the altitude at which you are trying to boil the water can affect it's boiling point (due to vapor pressure). But Billy is cooler than

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15y ago
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14y ago

what happens is that the molecules start to get more spread out in hot water and more compact in cold. That is why cold water turns into ice. When the water gets hot, the molecules get so far apart that they jump up and down out of the water. That is when it boils.

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9y ago

Pressure is the physical effect that can change the boiling point of a substance.

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Q: What physical changes take place at the boiling point?
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