Boiling is the process by which a liquid turns into a vapor when it is heated to it’s boiling point. The change from a liquid phase to a gaseous phase occurs when the vapor pressure of the liquid is equal to the atmospheric pressure exerted on the liquid. Boiling is a physical change and molecules are not chemically altered during the process.
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chemistry - the science that studies the properties of substances and natural fenomens .
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This statment is false, the pen on a seismograph does not swing freely.
